Control: tags 863018 + patch Control: tags 863018 + pending Control: tags 863019 + patch Control: tags 863019 + pending Control: tags 863021 + patch Control: tags 863021 + pending Control: tags 863022 + patch Control: tags 863022 + pending Control: tags 870865 + patch Control: tags 870865 + pending Control: tags 870867 + pending Control: tags 870870 + pending
Dear libxml2 maintainer(s) team, I've prepared an NMU for libxml2 (versioned as 2.9.4+dfsg1-3.1) and uploaded it to DELAYED/5. Please feel free to tell me if I should delay it longer or actually can reschedule to have it entering the archive earlier. I have prepared a corresponding upload for jessie-security and stretch-security, but would prefer to release those packages only after libxml2 has entered unstable as well. Regards, Salvatore
diff -Nru libxml2-2.9.4+dfsg1/debian/changelog libxml2-2.9.4+dfsg1/debian/changelog --- libxml2-2.9.4+dfsg1/debian/changelog 2017-07-04 21:59:55.000000000 +0200 +++ libxml2-2.9.4+dfsg1/debian/changelog 2017-08-20 06:56:40.000000000 +0200 @@ -1,3 +1,28 @@ +libxml2 (2.9.4+dfsg1-3.1) unstable; urgency=low + + * Non-maintainer upload. + * Increase buffer space for port in HTTP redirect support (CVE-2017-7376) + Incorrect limit was used for port values. (Closes: #870865) + * Prevent unwanted external entity reference (CVE-2017-7375) + Missing validation for external entities in xmlParsePEReference. + (Closes: #870867) + * Fix handling of parameter-entity references (CVE-2017-9049, CVE-2017-9050) + - Heap-based buffer over-read in function xmlDictComputeFastKey + (CVE-2017-9049). + - Heap-based buffer over-read in function xmlDictAddString + (CVE-2017-9050). + (Closes: #863019, #863018) + * Fix buffer size checks in xmlSnprintfElementContent (CVE-2017-9047, + CVE-2017-9048) + - Buffer overflow in function xmlSnprintfElementContent (CVE-2017-9047). + - Stack-based buffer overflow in function xmlSnprintfElementContent + (CVE-2017-9048). + (Closes: #863022, #863021) + * Fix type confusion in xmlValidateOneNamespace (CVE-2017-0663) + Heap buffer overflow in xmlAddID. (Closes: #870870) + + -- Salvatore Bonaccorso <car...@debian.org> Sun, 20 Aug 2017 06:56:40 +0200 + libxml2 (2.9.4+dfsg1-3) unstable; urgency=medium * Team upload. diff -Nru libxml2-2.9.4+dfsg1/debian/patches/0009-Increase-buffer-space-for-port-in-HTTP-redirect-supp.patch libxml2-2.9.4+dfsg1/debian/patches/0009-Increase-buffer-space-for-port-in-HTTP-redirect-supp.patch --- libxml2-2.9.4+dfsg1/debian/patches/0009-Increase-buffer-space-for-port-in-HTTP-redirect-supp.patch 1970-01-01 01:00:00.000000000 +0100 +++ libxml2-2.9.4+dfsg1/debian/patches/0009-Increase-buffer-space-for-port-in-HTTP-redirect-supp.patch 2017-08-20 06:56:40.000000000 +0200 @@ -0,0 +1,34 @@ +From: Daniel Veillard <veill...@redhat.com> +Date: Fri, 7 Apr 2017 17:13:28 +0200 +Subject: Increase buffer space for port in HTTP redirect support +Origin: https://git.gnome.org/browse/libxml2/commit/?id=5dca9eea1bd4263bfa4d037ab2443de1cd730f7e +Bug: https://bugzilla.gnome.org/show_bug.cgi?id=780690 +Bug-Debian: https://bugs.debian.org/870865 +Bug-Debian-Security: https://security-tracker.debian.org/tracker/CVE-2017-7376 + +For https://bugzilla.gnome.org/show_bug.cgi?id=780690 + +nanohttp.c: the code wrongly assumed a short int port value. +--- + nanohttp.c | 4 ++-- + 1 file changed, 2 insertions(+), 2 deletions(-) + +diff --git a/nanohttp.c b/nanohttp.c +index e109ad75..373425de 100644 +--- a/nanohttp.c ++++ b/nanohttp.c +@@ -1423,9 +1423,9 @@ retry: + if (ctxt->port != 80) { + /* reserve space for ':xxxxx', incl. potential proxy */ + if (proxy) +- blen += 12; ++ blen += 17; + else +- blen += 6; ++ blen += 11; + } + bp = (char*)xmlMallocAtomic(blen); + if ( bp == NULL ) { +-- +2.11.0 + diff -Nru libxml2-2.9.4+dfsg1/debian/patches/0010-Prevent-unwanted-external-entity-reference.patch libxml2-2.9.4+dfsg1/debian/patches/0010-Prevent-unwanted-external-entity-reference.patch --- libxml2-2.9.4+dfsg1/debian/patches/0010-Prevent-unwanted-external-entity-reference.patch 1970-01-01 01:00:00.000000000 +0100 +++ libxml2-2.9.4+dfsg1/debian/patches/0010-Prevent-unwanted-external-entity-reference.patch 2017-08-20 06:56:40.000000000 +0200 @@ -0,0 +1,38 @@ +From: Neel Mehta <nme...@google.com> +Date: Fri, 7 Apr 2017 17:43:02 +0200 +Subject: Prevent unwanted external entity reference +Origin: https://git.gnome.org/browse/libxml2/commit/?id=90ccb58242866b0ba3edbef8fe44214a101c2b3e +Bug: https://bugzilla.gnome.org/show_bug.cgi?id=780691 +Bug-Debian: https://bugs.debian.org/870867 +Bug-Debian-Security: https://security-tracker.debian.org/tracker/CVE-2017-7375 + +For https://bugzilla.gnome.org/show_bug.cgi?id=780691 + +* parser.c: add a specific check to avoid PE reference +--- + parser.c | 9 +++++++++ + 1 file changed, 9 insertions(+) + +diff --git a/parser.c b/parser.c +index 609a2703..c2c812de 100644 +--- a/parser.c ++++ b/parser.c +@@ -8123,6 +8123,15 @@ xmlParsePEReference(xmlParserCtxtPtr ctxt) + if (xmlPushInput(ctxt, input) < 0) + return; + } else { ++ if ((entity->etype == XML_EXTERNAL_PARAMETER_ENTITY) && ++ ((ctxt->options & XML_PARSE_NOENT) == 0) && ++ ((ctxt->options & XML_PARSE_DTDVALID) == 0) && ++ ((ctxt->options & XML_PARSE_DTDLOAD) == 0) && ++ ((ctxt->options & XML_PARSE_DTDATTR) == 0) && ++ (ctxt->replaceEntities == 0) && ++ (ctxt->validate == 0)) ++ return; ++ + /* + * TODO !!! + * handle the extra spaces added before and after +-- +2.11.0 + diff -Nru libxml2-2.9.4+dfsg1/debian/patches/0011-Fix-handling-of-parameter-entity-references.patch libxml2-2.9.4+dfsg1/debian/patches/0011-Fix-handling-of-parameter-entity-references.patch --- libxml2-2.9.4+dfsg1/debian/patches/0011-Fix-handling-of-parameter-entity-references.patch 1970-01-01 01:00:00.000000000 +0100 +++ libxml2-2.9.4+dfsg1/debian/patches/0011-Fix-handling-of-parameter-entity-references.patch 2017-08-20 06:56:40.000000000 +0200 @@ -0,0 +1,280 @@ +From: Nick Wellnhofer <wellnho...@aevum.de> +Date: Mon, 5 Jun 2017 15:37:17 +0200 +Subject: Fix handling of parameter-entity references +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit +Origin: https://git.gnome.org/browse/libxml2/commit/?id=e26630548e7d138d2c560844c43820b6767251e3 +Bug: https://bugzilla.gnome.org/show_bug.cgi?id=781205 +Bug-Debian: https://bugs.debian.org/863019 +Bug-Debian-Security: https://security-tracker.debian.org/tracker/CVE-2017-9049 +Bug: https://bugzilla.gnome.org/show_bug.cgi?id=781361 +Bug-Debian: https://bugs.debian.org/863018 +Bug-Debian-Security: https://security-tracker.debian.org/tracker/CVE-2017-9050 + +There were two bugs where parameter-entity references could lead to an +unexpected change of the input buffer in xmlParseNameComplex and +xmlDictLookup being called with an invalid pointer. + +Percent sign in DTD Names +========================= + +The NEXTL macro used to call xmlParserHandlePEReference. When parsing +"complex" names inside the DTD, this could result in entity expansion +which created a new input buffer. The fix is to simply remove the call +to xmlParserHandlePEReference from the NEXTL macro. This is safe because +no users of the macro require expansion of parameter entities. + +- xmlParseNameComplex +- xmlParseNCNameComplex +- xmlParseNmtoken + +The percent sign is not allowed in names, which are grammatical tokens. + +- xmlParseEntityValue + +Parameter-entity references in entity values are expanded but this +happens in a separate step in this function. + +- xmlParseSystemLiteral + +Parameter-entity references are ignored in the system literal. + +- xmlParseAttValueComplex +- xmlParseCharDataComplex +- xmlParseCommentComplex +- xmlParsePI +- xmlParseCDSect + +Parameter-entity references are ignored outside the DTD. + +- xmlLoadEntityContent + +This function is only called from xmlStringLenDecodeEntities and +entities are replaced in a separate step immediately after the function +call. + +This bug could also be triggered with an internal subset and double +entity expansion. + +This fixes bug 766956 initially reported by Wei Lei and independently by +Chromium's ClusterFuzz, Hanno B??ck, and Marco Grassi. Thanks to everyone +involved. + +xmlParseNameComplex with XML_PARSE_OLD10 +======================================== + +When parsing Names inside an expanded parameter entity with the +XML_PARSE_OLD10 option, xmlParseNameComplex would call xmlGROW via the +GROW macro if the input buffer was exhausted. At the end of the +parameter entity's replacement text, this function would then call +xmlPopInput which invalidated the input buffer. + +There should be no need to invoke GROW in this situation because the +buffer is grown periodically every XML_PARSER_CHUNK_SIZE characters and, +at least for UTF-8, in xmlCurrentChar. This also matches the code path +executed when XML_PARSE_OLD10 is not set. + +This fixes bugs 781205 (CVE-2017-9049) and 781361 (CVE-2017-9050). +Thanks to Marcel B??hme and Thuan Pham for the report. + +Additional hardening +==================== + +A separate check was added in xmlParseNameComplex to validate the +buffer size. +--- + Makefile.am | 18 ++++++++++++++++++ + parser.c | 18 ++++++++++-------- + result/errors10/781205.xml | 0 + result/errors10/781205.xml.err | 21 +++++++++++++++++++++ + result/errors10/781361.xml | 0 + result/errors10/781361.xml.err | 13 +++++++++++++ + result/valid/766956.xml | 0 + result/valid/766956.xml.err | 9 +++++++++ + result/valid/766956.xml.err.rdr | 10 ++++++++++ + runtest.c | 3 +++ + test/errors10/781205.xml | 3 +++ + test/errors10/781361.xml | 3 +++ + test/valid/766956.xml | 2 ++ + test/valid/dtds/766956.dtd | 2 ++ + 14 files changed, 94 insertions(+), 8 deletions(-) + create mode 100644 result/errors10/781205.xml + create mode 100644 result/errors10/781205.xml.err + create mode 100644 result/errors10/781361.xml + create mode 100644 result/errors10/781361.xml.err + create mode 100644 result/valid/766956.xml + create mode 100644 result/valid/766956.xml.err + create mode 100644 result/valid/766956.xml.err.rdr + create mode 100644 test/errors10/781205.xml + create mode 100644 test/errors10/781361.xml + create mode 100644 test/valid/766956.xml + create mode 100644 test/valid/dtds/766956.dtd + +--- a/Makefile.am ++++ b/Makefile.am +@@ -422,6 +422,24 @@ Errtests : xmllint$(EXEEXT) + if [ -n "$$log" ] ; then echo $$name result ; echo $$log ; fi ; \ + rm result.$$name error.$$name ; \ + fi ; fi ; done) ++ @echo "## Error cases regression tests (old 1.0)" ++ -@(for i in $(srcdir)/test/errors10/*.xml ; do \ ++ name=`basename $$i`; \ ++ if [ ! -d $$i ] ; then \ ++ if [ ! -f $(srcdir)/result/errors10/$$name ] ; then \ ++ echo New test file $$name ; \ ++ $(CHECKER) $(top_builddir)/xmllint --oldxml10 $$i \ ++ 2> $(srcdir)/result/errors10/$$name.err \ ++ > $(srcdir)/result/errors10/$$name ; \ ++ grep "MORY ALLO" .memdump | grep -v "MEMORY ALLOCATED : 0"; \ ++ else \ ++ log=`$(CHECKER) $(top_builddir)/xmllint --oldxml10 $$i 2> error.$$name > result.$$name ; \ ++ grep "MORY ALLO" .memdump | grep -v "MEMORY ALLOCATED : 0"; \ ++ diff $(srcdir)/result/errors10/$$name result.$$name ; \ ++ diff $(srcdir)/result/errors10/$$name.err error.$$name` ; \ ++ if [ -n "$$log" ] ; then echo $$name result ; echo "$$log" ; fi ; \ ++ rm result.$$name error.$$name ; \ ++ fi ; fi ; done) + @echo "## Error cases stream regression tests" + -@(for i in $(srcdir)/test/errors/*.xml ; do \ + name=`basename $$i`; \ +--- a/parser.c ++++ b/parser.c +@@ -2115,7 +2115,6 @@ static void xmlGROW (xmlParserCtxtPtr ct + ctxt->input->line++; ctxt->input->col = 1; \ + } else ctxt->input->col++; \ + ctxt->input->cur += l; \ +- if (*ctxt->input->cur == '%') xmlParserHandlePEReference(ctxt); \ + } while (0) + + #define CUR_CHAR(l) xmlCurrentChar(ctxt, &l) +@@ -3406,13 +3405,6 @@ xmlParseNameComplex(xmlParserCtxtPtr ctx + len += l; + NEXTL(l); + c = CUR_CHAR(l); +- if (c == 0) { +- count = 0; +- GROW; +- if (ctxt->instate == XML_PARSER_EOF) +- return(NULL); +- c = CUR_CHAR(l); +- } + } + } + if ((len > XML_MAX_NAME_LENGTH) && +@@ -3420,6 +3412,16 @@ xmlParseNameComplex(xmlParserCtxtPtr ctx + xmlFatalErr(ctxt, XML_ERR_NAME_TOO_LONG, "Name"); + return(NULL); + } ++ if (ctxt->input->cur - ctxt->input->base < len) { ++ /* ++ * There were a couple of bugs where PERefs lead to to a change ++ * of the buffer. Check the buffer size to avoid passing an invalid ++ * pointer to xmlDictLookup. ++ */ ++ xmlFatalErr(ctxt, XML_ERR_INTERNAL_ERROR, ++ "unexpected change of input buffer"); ++ return (NULL); ++ } + if ((*ctxt->input->cur == '\n') && (ctxt->input->cur[-1] == '\r')) + return(xmlDictLookup(ctxt->dict, ctxt->input->cur - (len + 1), len)); + return(xmlDictLookup(ctxt->dict, ctxt->input->cur - len, len)); +--- /dev/null ++++ b/result/errors10/781205.xml.err +@@ -0,0 +1,21 @@ ++Entity: line 1: parser error : internal error: xmlParseInternalSubset: error detected in Markup declaration ++ ++ %a; ++ ^ ++Entity: line 1: ++<:0000 ++^ ++Entity: line 1: parser error : DOCTYPE improperly terminated ++ %a; ++ ^ ++Entity: line 1: ++<:0000 ++^ ++namespace error : Failed to parse QName ':0000' ++ %a; ++ ^ ++<:0000 ++ ^ ++./test/errors10/781205.xml:4: parser error : Couldn't find end of Start Tag :0000 line 1 ++ ++^ +--- /dev/null ++++ b/result/errors10/781361.xml.err +@@ -0,0 +1,13 @@ ++./test/errors10/781361.xml:4: parser error : xmlParseElementDecl: 'EMPTY', 'ANY' or '(' expected ++ ++^ ++./test/errors10/781361.xml:4: parser error : internal error: xmlParseInternalSubset: error detected in Markup declaration ++ ++ ++^ ++./test/errors10/781361.xml:4: parser error : DOCTYPE improperly terminated ++ ++^ ++./test/errors10/781361.xml:4: parser error : Start tag expected, '<' not found ++ ++^ +--- /dev/null ++++ b/result/valid/766956.xml.err +@@ -0,0 +1,9 @@ ++test/valid/dtds/766956.dtd:2: parser error : PEReference: expecting ';' ++%??%ent; ++ ^ ++Entity: line 1: parser error : Content error in the external subset ++ %ent; ++ ^ ++Entity: line 1: ++value ++^ +--- /dev/null ++++ b/result/valid/766956.xml.err.rdr +@@ -0,0 +1,10 @@ ++test/valid/dtds/766956.dtd:2: parser error : PEReference: expecting ';' ++%??%ent; ++ ^ ++Entity: line 1: parser error : Content error in the external subset ++ %ent; ++ ^ ++Entity: line 1: ++value ++^ ++./test/valid/766956.xml : failed to parse +--- a/runtest.c ++++ b/runtest.c +@@ -4202,6 +4202,9 @@ testDesc testDescriptions[] = { + { "Error cases regression tests", + errParseTest, "./test/errors/*.xml", "result/errors/", "", ".err", + 0 }, ++ { "Error cases regression tests (old 1.0)", ++ errParseTest, "./test/errors10/*.xml", "result/errors10/", "", ".err", ++ XML_PARSE_OLD10 }, + #ifdef LIBXML_READER_ENABLED + { "Error cases stream regression tests", + streamParseTest, "./test/errors/*.xml", "result/errors/", NULL, ".str", +--- /dev/null ++++ b/test/errors10/781205.xml +@@ -0,0 +1,3 @@ ++<!DOCTYPE D [ ++ <!ENTITY % a "<:0000"> ++ %a; +--- /dev/null ++++ b/test/errors10/781361.xml +@@ -0,0 +1,3 @@ ++<!DOCTYPE doc [ ++ <!ENTITY % elem "<!ELEMENT e0000000000"> ++ %elem; +--- /dev/null ++++ b/test/valid/766956.xml +@@ -0,0 +1,2 @@ ++<!DOCTYPE test SYSTEM "dtds/766956.dtd"> ++<test/> +--- /dev/null ++++ b/test/valid/dtds/766956.dtd +@@ -0,0 +1,2 @@ ++<!ENTITY % ent "value"> ++%??%ent; diff -Nru libxml2-2.9.4+dfsg1/debian/patches/0012-Fix-buffer-size-checks-in-xmlSnprintfElementContent.patch libxml2-2.9.4+dfsg1/debian/patches/0012-Fix-buffer-size-checks-in-xmlSnprintfElementContent.patch --- libxml2-2.9.4+dfsg1/debian/patches/0012-Fix-buffer-size-checks-in-xmlSnprintfElementContent.patch 1970-01-01 01:00:00.000000000 +0100 +++ libxml2-2.9.4+dfsg1/debian/patches/0012-Fix-buffer-size-checks-in-xmlSnprintfElementContent.patch 2017-08-20 06:56:40.000000000 +0200 @@ -0,0 +1,122 @@ +From: Nick Wellnhofer <wellnho...@aevum.de> +Date: Sat, 3 Jun 2017 02:01:29 +0200 +Subject: Fix buffer size checks in xmlSnprintfElementContent +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit +Origin: https://git.gnome.org/browse/libxml2/commit/?id=932cc9896ab41475d4aa429c27d9afd175959d74 +Bug: https://bugzilla.gnome.org/show_bug.cgi?id=781333 +Bug-Debian: https://bugs.debian.org/863022 +Bug-Debian-Security: https://security-tracker.debian.org/tracker/CVE-2017-9047 +Bug: https://bugzilla.gnome.org/show_bug.cgi?id=781701 +Bug-Debian: https://bugs.debian.org/863021 +Bug-Debian-Security: https://security-tracker.debian.org/tracker/CVE-2017-9048 + +xmlSnprintfElementContent failed to correctly check the available +buffer space in two locations. + +Fixes bug 781333 (CVE-2017-9047) and bug 781701 (CVE-2017-9048). + +Thanks to Marcel B??hme and Thuan Pham for the report. +--- + result/valid/781333.xml | 5 +++++ + result/valid/781333.xml.err | 3 +++ + result/valid/781333.xml.err.rdr | 6 ++++++ + test/valid/781333.xml | 4 ++++ + valid.c | 20 +++++++++++--------- + 5 files changed, 29 insertions(+), 9 deletions(-) + create mode 100644 result/valid/781333.xml + create mode 100644 result/valid/781333.xml.err + create mode 100644 result/valid/781333.xml.err.rdr + create mode 100644 test/valid/781333.xml + +diff --git a/result/valid/781333.xml b/result/valid/781333.xml +new file mode 100644 +index 00000000..45dc451d +--- /dev/null ++++ b/result/valid/781333.xml +@@ -0,0 +1,5 @@ ++<?xml version="1.0"?> ++<!DOCTYPE a [ ++<!ELEMENT a (pppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppp:llllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll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++]> ++<a/> +diff --git a/result/valid/781333.xml.err b/result/valid/781333.xml.err +new file mode 100644 +index 00000000..b401b49a +--- /dev/null ++++ b/result/valid/781333.xml.err +@@ -0,0 +1,3 @@ ++./test/valid/781333.xml:4: element a: validity error : Element a content does not follow the DTD, expecting ( ..., got ++<a/> ++ ^ +diff --git a/result/valid/781333.xml.err.rdr b/result/valid/781333.xml.err.rdr +new file mode 100644 +index 00000000..5ff56992 +--- /dev/null ++++ b/result/valid/781333.xml.err.rdr +@@ -0,0 +1,6 @@ ++./test/valid/781333.xml:4: element a: validity error : Element a content does not follow the DTD, expecting ( ..., got ++<a/> ++ ^ ++./test/valid/781333.xml:5: element a: validity error : Element a content does not follow the DTD, Expecting more child ++ ++^ +diff --git a/test/valid/781333.xml b/test/valid/781333.xml +new file mode 100644 +index 00000000..b29e5a68 +--- /dev/null ++++ b/test/valid/781333.xml +@@ -0,0 +1,4 @@ ++<!DOCTYPE a [ ++ <!ELEMENT a (pppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppp:llllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllll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++]> ++<a/> +diff --git a/valid.c b/valid.c +index 19f84b82..9b2df56a 100644 +--- a/valid.c ++++ b/valid.c +@@ -1262,22 +1262,23 @@ xmlSnprintfElementContent(char *buf, int size, xmlElementContentPtr content, int + case XML_ELEMENT_CONTENT_PCDATA: + strcat(buf, "#PCDATA"); + break; +- case XML_ELEMENT_CONTENT_ELEMENT: ++ case XML_ELEMENT_CONTENT_ELEMENT: { ++ int qnameLen = xmlStrlen(content->name); ++ ++ if (content->prefix != NULL) ++ qnameLen += xmlStrlen(content->prefix) + 1; ++ if (size - len < qnameLen + 10) { ++ strcat(buf, " ..."); ++ return; ++ } + if (content->prefix != NULL) { +- if (size - len < xmlStrlen(content->prefix) + 10) { +- strcat(buf, " ..."); +- return; +- } + strcat(buf, (char *) content->prefix); + strcat(buf, ":"); + } +- if (size - len < xmlStrlen(content->name) + 10) { +- strcat(buf, " ..."); +- return; +- } + if (content->name != NULL) + strcat(buf, (char *) content->name); + break; ++ } + case XML_ELEMENT_CONTENT_SEQ: + if ((content->c1->type == XML_ELEMENT_CONTENT_OR) || + (content->c1->type == XML_ELEMENT_CONTENT_SEQ)) +@@ -1319,6 +1320,7 @@ xmlSnprintfElementContent(char *buf, int size, xmlElementContentPtr content, int + xmlSnprintfElementContent(buf, size, content->c2, 0); + break; + } ++ if (size - strlen(buf) <= 2) return; + if (englob) + strcat(buf, ")"); + switch (content->ocur) { +-- +2.11.0 + diff -Nru libxml2-2.9.4+dfsg1/debian/patches/0013-Fix-type-confusion-in-xmlValidateOneNamespace.patch libxml2-2.9.4+dfsg1/debian/patches/0013-Fix-type-confusion-in-xmlValidateOneNamespace.patch --- libxml2-2.9.4+dfsg1/debian/patches/0013-Fix-type-confusion-in-xmlValidateOneNamespace.patch 1970-01-01 01:00:00.000000000 +0100 +++ libxml2-2.9.4+dfsg1/debian/patches/0013-Fix-type-confusion-in-xmlValidateOneNamespace.patch 2017-08-20 06:56:40.000000000 +0200 @@ -0,0 +1,46 @@ +From: Nick Wellnhofer <wellnho...@aevum.de> +Date: Tue, 6 Jun 2017 12:56:28 +0200 +Subject: Fix type confusion in xmlValidateOneNamespace +Origin: https://git.gnome.org/browse/libxml2/commit/?id=92b9e8c8b3787068565a1820ba575d042f9eec66 +Bug: https://bugzilla.gnome.org/show_bug.cgi?id=780228 +Bug-Debian: https://bugs.debian.org/870870 +Bug-Debian-Security: https://security-tracker.debian.org/tracker/CVE-2017-0663 + +Comment out code that casts xmlNsPtr to xmlAttrPtr. ID types on +namespace declarations make no practical sense anyway. + +Fixes bug 780228. + +Found with libFuzzer and ASan. +--- + valid.c | 7 +++++++ + 1 file changed, 7 insertions(+) + +diff --git a/valid.c b/valid.c +index 8075d3a0..c51ea290 100644 +--- a/valid.c ++++ b/valid.c +@@ -4627,6 +4627,12 @@ xmlNodePtr elem, const xmlChar *prefix, xmlNsPtr ns, const xmlChar *value) { + } + } + ++ /* ++ * Casting ns to xmlAttrPtr is wrong. We'd need separate functions ++ * xmlAddID and xmlAddRef for namespace declarations, but it makes ++ * no practical sense to use ID types anyway. ++ */ ++#if 0 + /* Validity Constraint: ID uniqueness */ + if (attrDecl->atype == XML_ATTRIBUTE_ID) { + if (xmlAddID(ctxt, doc, value, (xmlAttrPtr) ns) == NULL) +@@ -4638,6 +4644,7 @@ xmlNodePtr elem, const xmlChar *prefix, xmlNsPtr ns, const xmlChar *value) { + if (xmlAddRef(ctxt, doc, value, (xmlAttrPtr) ns) == NULL) + ret = 0; + } ++#endif + + /* Validity Constraint: Notation Attributes */ + if (attrDecl->atype == XML_ATTRIBUTE_NOTATION) { +-- +2.11.0 + diff -Nru libxml2-2.9.4+dfsg1/debian/patches/series libxml2-2.9.4+dfsg1/debian/patches/series --- libxml2-2.9.4+dfsg1/debian/patches/series 2017-07-04 20:10:30.000000000 +0200 +++ libxml2-2.9.4+dfsg1/debian/patches/series 2017-08-20 06:56:40.000000000 +0200 @@ -6,3 +6,8 @@ 0006-Disallow-namespace-nodes-in-XPointer-ranges.patch 0007-Fix-more-NULL-pointer-derefs-in-xpointer.c.patch 0008-Fix-attribute-decoding-during-XML-schema-validation.patch +0009-Increase-buffer-space-for-port-in-HTTP-redirect-supp.patch +0010-Prevent-unwanted-external-entity-reference.patch +0011-Fix-handling-of-parameter-entity-references.patch +0012-Fix-buffer-size-checks-in-xmlSnprintfElementContent.patch +0013-Fix-type-confusion-in-xmlValidateOneNamespace.patch
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