OpenPKG CVS Repository
http://cvs.openpkg.org/
____________________________________________________________________________
Server: cvs.openpkg.org Name: Ralf S. Engelschall
Root: /v/openpkg/cvs Email: [EMAIL PROTECTED]
Module: openpkg-src Date: 08-Nov-2006 17:09:54
Branch: HEAD Handle: 2006110816095400
Added files:
openpkg-src/libarchive libarchive.patch
Modified files:
openpkg-src/libarchive libarchive.spec
Log:
security fix: fix infinite loop in corrupt archives handling
(FreeBSD-SA-06:24.libarchive)
Summary:
Revision Changes Path
1.3 +51 -0 openpkg-src/libarchive/libarchive.patch
1.47 +3 -1 openpkg-src/libarchive/libarchive.spec
____________________________________________________________________________
patch -p0 <<'@@ .'
Index: openpkg-src/libarchive/libarchive.patch
============================================================================
$ cvs diff -u -r0 -r1.3 libarchive.patch
--- /dev/null 2006-11-08 17:09:47 +0100
+++ libarchive.patch 2006-11-08 17:09:54 +0100
@@ -0,0 +1,51 @@
+Index: libarchive/archive_read_support_compression_none.c
+--- libarchive/archive_read_support_compression_none.c.orig 2006-09-05
08:00:47 +0200
++++ libarchive/archive_read_support_compression_none.c 2006-11-08
17:06:23 +0100
+@@ -257,7 +257,9 @@
+ }
+
+ /*
+- * Skip at most request bytes. Skipped data is marked as consumed.
++ * Skip forward by exactly the requested bytes or else return
++ * ARCHIVE_FATAL. Note that this differs from the contract for
++ * read_ahead, which does not gaurantee a minimum count.
+ */
+ static ssize_t
+ archive_decompressor_none_skip(struct archive *a, size_t request)
+@@ -287,9 +289,7 @@
+ if (request == 0)
+ return (total_bytes_skipped);
+ /*
+- * If no client_skipper is provided, just read the old way. It is very
+- * likely that after skipping, the request has not yet been fully
+- * satisfied (and is still > 0). In that case, read as well.
++ * If a client_skipper was provided, try that first.
+ */
+ if (a->client_skipper != NULL) {
+ bytes_skipped = (a->client_skipper)(a, a->client_data,
+@@ -307,6 +307,12 @@
+ a->raw_position += bytes_skipped;
+ state->client_avail = state->client_total = 0;
+ }
++ /*
++ * Note that client_skipper will usually not satisfy the
++ * full request (due to low-level blocking concerns),
++ * so even if client_skipper is provided, we may still
++ * have to use ordinary reads to finish out the request.
++ */
+ while (request > 0) {
+ const void* dummy_buffer;
+ ssize_t bytes_read;
+@@ -314,6 +320,12 @@
+ &dummy_buffer, request);
+ if (bytes_read < 0)
+ return (bytes_read);
++ if (bytes_read == 0) {
++ /* We hit EOF before we satisfied the skip request. */
++ archive_set_error(a, ARCHIVE_ERRNO_MISC,
++ "Truncated input file (need to skip %d bytes)",
(int)request);
++ return (ARCHIVE_FATAL);
++ }
+ assert(bytes_read >= 0); /* precondition for cast below */
+ min = minimum((size_t)bytes_read, request);
+ bytes_read = archive_decompressor_none_read_consume(a, min);
@@ .
patch -p0 <<'@@ .'
Index: openpkg-src/libarchive/libarchive.spec
============================================================================
$ cvs diff -u -r1.46 -r1.47 libarchive.spec
--- openpkg-src/libarchive/libarchive.spec 1 Nov 2006 11:11:41 -0000
1.46
+++ openpkg-src/libarchive/libarchive.spec 8 Nov 2006 16:09:54 -0000
1.47
@@ -33,10 +33,11 @@
Group: Archiver
License: MIT-style
Version: 2.0a1
-Release: 20061101
+Release: 20061108
# list of sources
Source0:
http://people.freebsd.org/~kientzle/libarchive/src/libarchive-%{version}.tar.gz
+Patch0: libarchive.patch
# build information
Prefix: %{l_prefix}
@@ -63,6 +64,7 @@
%prep
%setup -q
+ %patch -p0
%build
CC="%{l_cc}" \
@@ .
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