Package: release.debian.org
Severity: normal
Tags: bullseye
User: release.debian....@packages.debian.org
Usertags: pu
Dear release team,
I'd like to update openvswitch.
[ Reason ]
Indeed, the updated version I would like to push contains a fix for
CVE-2021-36980 (Debian bug #991308), and a fix for having libofproto
properly installed if activating dpdk (which fixes #992406 and
#989585). This update-alternatives fix has been in Unstable for a long
time already.
[ Impact ]
- CVE-2021-36980.
- Non-working DPDK setup when using LLDP.
[ Tests ]
The OVS package has a test suite that's run at build time.
We also set it in real production and it worked for us.
[ Risks ]
IMO, code is rather trivial.
[ Checklist ]
[x] *all* changes are documented in the d/changelog
[x] I reviewed all changes and I approve them
[x] attach debdiff against the package in (old)stable
[x] the issue is verified as fixed in unstable
Cheers,
Thomas Goirand (zigo)
diff -Nru openvswitch-2.15.0+ds1/debian/changelog
openvswitch-2.15.0+ds1/debian/changelog
--- openvswitch-2.15.0+ds1/debian/changelog 2021-02-20 21:58:03.000000000
+0100
+++ openvswitch-2.15.0+ds1/debian/changelog 2022-01-03 13:53:38.000000000
+0100
@@ -1,3 +1,14 @@
+openvswitch (2.15.0+ds1-2+deb11u1) bullseye; urgency=medium
+
+ * CVE-2021-36980: use-after-free in decode_NXAST_RAW_ENCAPAdd. Add upstream
+ patch (Closes: #991308).
+
+ [ Felix Moessbauer ]
+ * fix ABI incompatibility that crashes OVS when enabling LLDP
+ (Closes: #992406).
+
+ -- Thomas Goirand <z...@debian.org> Mon, 03 Jan 2022 13:53:38 +0100
+
openvswitch (2.15.0+ds1-2) unstable; urgency=medium
* Mipsel64 and mipsel: blacklist more tests, as they are failing on these
diff -Nru openvswitch-2.15.0+ds1/debian/openvswitch-common.postinst.in
openvswitch-2.15.0+ds1/debian/openvswitch-common.postinst.in
--- openvswitch-2.15.0+ds1/debian/openvswitch-common.postinst.in
2021-02-20 21:58:03.000000000 +0100
+++ openvswitch-2.15.0+ds1/debian/openvswitch-common.postinst.in
2022-01-03 13:53:38.000000000 +0100
@@ -4,7 +4,8 @@
if [ "${1}" = "configure" ] ; then
update-alternatives --install /usr/sbin/ovs-vswitchd ovs-vswitchd
/usr/lib/openvswitch-common/ovs-vswitchd 100 \
- --slave /usr/lib/%%MULTIARCH_TRIPLETT%%/libopenvswitch-2.15.so.0.0.0
libopenvswitch.so /usr/lib/openvswitch-common/libopenvswitch-2.15.so.0.0.0
+ --slave /usr/lib/%%MULTIARCH_TRIPLETT%%/libopenvswitch-2.15.so.0.0.0
libopenvswitch.so /usr/lib/openvswitch-common/libopenvswitch-2.15.so.0.0.0 \
+ --slave /usr/lib/%%MULTIARCH_TRIPLETT%%/libofproto-2.15.so.0.0.0
libofproto.so /usr/lib/openvswitch-common/libofproto-2.15.so.0.0.0
fi
#DEBHELPER#
diff -Nru openvswitch-2.15.0+ds1/debian/openvswitch-switch-dpdk.postinst.in
openvswitch-2.15.0+ds1/debian/openvswitch-switch-dpdk.postinst.in
--- openvswitch-2.15.0+ds1/debian/openvswitch-switch-dpdk.postinst.in
2021-02-20 21:58:03.000000000 +0100
+++ openvswitch-2.15.0+ds1/debian/openvswitch-switch-dpdk.postinst.in
2022-01-03 13:53:38.000000000 +0100
@@ -4,7 +4,8 @@
if [ "${1}" = "configure" ] ; then
update-alternatives --install /usr/sbin/ovs-vswitchd ovs-vswitchd
/usr/lib/openvswitch-switch-dpdk/ovs-vswitchd-dpdk 200 \
- --slave /usr/lib/%%MULTIARCH_TRIPLETT%%/libopenvswitch-2.15.so.0.0.0
libopenvswitch.so /usr/lib/openvswitch-switch-dpdk/libopenvswitch-2.15.so.0.0.0
+ --slave /usr/lib/%%MULTIARCH_TRIPLETT%%/libopenvswitch-2.15.so.0.0.0
libopenvswitch.so /usr/lib/openvswitch-switch-dpdk/libopenvswitch-2.15.so.0.0.0
\
+ --slave /usr/lib/%%MULTIARCH_TRIPLETT%%/libofproto-2.15.so.0.0.0
libofproto.so /usr/lib/openvswitch-switch-dpdk/libofproto-2.15.so.0.0.0
fi
#DEBHELPER#
diff -Nru
openvswitch-2.15.0+ds1/debian/patches/CVE-2021-36980_Fix_use-after-free_while_decoding_RAW_ENCAP.patch
openvswitch-2.15.0+ds1/debian/patches/CVE-2021-36980_Fix_use-after-free_while_decoding_RAW_ENCAP.patch
---
openvswitch-2.15.0+ds1/debian/patches/CVE-2021-36980_Fix_use-after-free_while_decoding_RAW_ENCAP.patch
1970-01-01 01:00:00.000000000 +0100
+++
openvswitch-2.15.0+ds1/debian/patches/CVE-2021-36980_Fix_use-after-free_while_decoding_RAW_ENCAP.patch
2022-01-03 13:53:38.000000000 +0100
@@ -0,0 +1,87 @@
+Description: CVE-2021-36980: ofp-actions: Fix use-after-free while decoding
RAW_ENCAP.
+ While decoding RAW_ENCAP action, decode_ed_prop() might re-allocate
+ ofpbuf if there is no enough space left. However, function
+ 'decode_NXAST_RAW_ENCAP' continues to use old pointer to 'encap'
+ structure leading to write-after-free and incorrect decoding.
+ .
+ ==3549105==ERROR: AddressSanitizer: heap-use-after-free on address
+ 0x60600000011a at pc 0x0000005f6cc6 bp 0x7ffc3a2d4410 sp 0x7ffc3a2d4408
+ WRITE of size 2 at 0x60600000011a thread T0
+ #0 0x5f6cc5 in decode_NXAST_RAW_ENCAP lib/ofp-actions.c:4461:20
+ #1 0x5f0551 in ofpact_decode ./lib/ofp-actions.inc2:4777:16
+ #2 0x5ed17c in ofpacts_decode lib/ofp-actions.c:7752:21
+ #3 0x5eba9a in ofpacts_pull_openflow_actions__ lib/ofp-actions.c:7791:13
+ #4 0x5eb9fc in ofpacts_pull_openflow_actions lib/ofp-actions.c:7835:12
+ #5 0x64bb8b in ofputil_decode_packet_out lib/ofp-packet.c:1113:17
+ #6 0x65b6f4 in ofp_print_packet_out lib/ofp-print.c:148:13
+ #7 0x659e3f in ofp_to_string__ lib/ofp-print.c:1029:16
+ #8 0x659b24 in ofp_to_string lib/ofp-print.c:1244:21
+ #9 0x65a28c in ofp_print lib/ofp-print.c:1288:28
+ #10 0x540d11 in ofctl_ofp_parse utilities/ovs-ofctl.c:2814:9
+ #11 0x564228 in ovs_cmdl_run_command__ lib/command-line.c:247:17
+ #12 0x56408a in ovs_cmdl_run_command lib/command-line.c:278:5
+ #13 0x5391ae in main utilities/ovs-ofctl.c:179:9
+ #14 0x7f6911ce9081 in __libc_start_main (/lib64/libc.so.6+0x27081)
+ #15 0x461fed in _start (utilities/ovs-ofctl+0x461fed)
+ .
+ Fix that by getting a new pointer before using.
+ .
+ Credit to OSS-Fuzz.
+ .
+ Fuzzer regression test will fail only with AddressSanitizer enabled.
+Author: Ilya Maximets <i.maxim...@ovn.org>
+Date: Tue, 16 Feb 2021 23:27:30 +0100
+Reported-at: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=27851
+Fixes: f839892a206a ("OF support and translation of generic encap and decap")
+Acked-by: William Tu <u9012...@gmail.com>
+Signed-off-by: Ilya Maximets <i.maxim...@ovn.org>
+Bug-Debian: https://bugs.debian.org/991308
+Origin: upstream,
https://github.com/openvswitch/ovs/commit/38744b1bcb022c611712527f039722115300f58f.patch
+Last-Update: 2021-07-21
+
+diff --git a/lib/ofp-actions.c b/lib/ofp-actions.c
+index e2e829772a5..0342a228b70 100644
+--- a/lib/ofp-actions.c
++++ b/lib/ofp-actions.c
+@@ -4431,6 +4431,7 @@ decode_NXAST_RAW_ENCAP(const struct nx_action_encap *nae,
+ {
+ struct ofpact_encap *encap;
+ const struct ofp_ed_prop_header *ofp_prop;
++ const size_t encap_ofs = out->size;
+ size_t props_len;
+ uint16_t n_props = 0;
+ int err;
+@@ -4458,6 +4459,7 @@ decode_NXAST_RAW_ENCAP(const struct nx_action_encap *nae,
+ }
+ n_props++;
+ }
++ encap = ofpbuf_at_assert(out, encap_ofs, sizeof *encap);
+ encap->n_props = n_props;
+ out->header = &encap->ofpact;
+ ofpact_finish_ENCAP(out, &encap);
+diff --git a/tests/automake.mk b/tests/automake.mk
+index 677b99a6b48..fc80e027dfc 100644
+--- a/tests/automake.mk
++++ b/tests/automake.mk
+@@ -134,7 +134,8 @@ FUZZ_REGRESSION_TESTS = \
+ tests/fuzz-regression/ofp_print_fuzzer-5722747668791296 \
+ tests/fuzz-regression/ofp_print_fuzzer-6285128790704128 \
+ tests/fuzz-regression/ofp_print_fuzzer-6470117922701312 \
+- tests/fuzz-regression/ofp_print_fuzzer-6502620041576448
++ tests/fuzz-regression/ofp_print_fuzzer-6502620041576448 \
++ tests/fuzz-regression/ofp_print_fuzzer-6540965472632832
+ $(srcdir)/tests/fuzz-regression-list.at: tests/automake.mk
+ $(AM_V_GEN)for name in $(FUZZ_REGRESSION_TESTS); do \
+ basename=`echo $$name | sed 's,^.*/,,'`; \
+diff --git a/tests/fuzz-regression-list.at b/tests/fuzz-regression-list.at
+index e3173fb88f0..2347c690eff 100644
+--- a/tests/fuzz-regression-list.at
++++ b/tests/fuzz-regression-list.at
+@@ -21,3 +21,4 @@ TEST_FUZZ_REGRESSION([ofp_print_fuzzer-5722747668791296])
+ TEST_FUZZ_REGRESSION([ofp_print_fuzzer-6285128790704128])
+ TEST_FUZZ_REGRESSION([ofp_print_fuzzer-6470117922701312])
+ TEST_FUZZ_REGRESSION([ofp_print_fuzzer-6502620041576448])
++TEST_FUZZ_REGRESSION([ofp_print_fuzzer-6540965472632832])
+diff --git a/tests/fuzz-regression/ofp_print_fuzzer-6540965472632832
b/tests/fuzz-regression/ofp_print_fuzzer-6540965472632832
+new file mode 100644
+index 00000000000..e69de29bb2d
diff -Nru openvswitch-2.15.0+ds1/debian/patches/series
openvswitch-2.15.0+ds1/debian/patches/series
--- openvswitch-2.15.0+ds1/debian/patches/series 2021-02-20
21:58:03.000000000 +0100
+++ openvswitch-2.15.0+ds1/debian/patches/series 2022-01-03
13:53:38.000000000 +0100
@@ -1,2 +1,3 @@
remove-include-debian-automake.mk.patch
py3-compat.patch
+CVE-2021-36980_Fix_use-after-free_while_decoding_RAW_ENCAP.patch
diff -Nru openvswitch-2.15.0+ds1/debian/rules
openvswitch-2.15.0+ds1/debian/rules
--- openvswitch-2.15.0+ds1/debian/rules 2021-02-20 21:58:03.000000000 +0100
+++ openvswitch-2.15.0+ds1/debian/rules 2022-01-03 13:53:38.000000000 +0100
@@ -181,6 +181,7 @@
endif # nocheck
override_dh_auto_build:
+ touch tests/fuzz-regression/ofp_print_fuzzer-6540965472632832
set -e ; set -x ; for MYMAINTSCRIPT in openvswitch-common.postinst
openvswitch-switch-dpdk.postinst ; do \
sed s/%%MULTIARCH_TRIPLETT%%/$$(dpkg-architecture
-qDEB_HOST_MULTIARCH)/ debian/$$MYMAINTSCRIPT.in >debian/$$MYMAINTSCRIPT ; \
done
@@ -207,6 +208,9 @@
$(CURDIR)/debian/openvswitch-common/usr/lib/openvswitch-common/ovs-vswitchd
mv $(CURDIR)/debian/tmp/usr/lib/*/libopenvswitch-2.15.so.0.0.0 \
$(CURDIR)/debian/openvswitch-common/usr/lib/openvswitch-common/libopenvswitch-2.15.so.0.0.0
+ mv $(CURDIR)/debian/tmp/usr/lib/*/libofproto-2.15.so.0.0.0 \
+
$(CURDIR)/debian/openvswitch-common/usr/lib/openvswitch-common/libofproto-2.15.so.0.0.0
+
override_dh_auto_install-indep:
$(MAKE) -C _debian DESTDIR=$(CURDIR)/debian/tmp install
@@ -218,7 +222,10 @@
override_dh_install:
install -D -m 0644 utilities/ovs-vsctl-bashcomp.bash
$(CURDIR)/debian/openvswitch-switch/usr/share/bash-completion/completions/ovs-vsctl
- dh_install --exclude=usr/sbin/ovs-vswitchd
--exclude=usr/lib/`dpkg-architecture
-qDEB_HOST_MULTIARCH`/libopenvswitch-2.15.so.0.0.0
+ dh_install --exclude=usr/sbin/ovs-vswitchd \
+ --exclude=usr/lib/`dpkg-architecture
-qDEB_HOST_MULTIARCH`/libopenvswitch-2.15.so.0.0.0 \
+ --exclude=usr/lib/`dpkg-architecture
-qDEB_HOST_MULTIARCH`/libofproto-2.15.so.0.0.0
+
rm -f $(CURDIR)/debian/tmp/usr/lib/*/*.la
dh_installman --language=C
@@ -227,6 +234,7 @@
# remove the files managed via update-alternatives
rm -f $(CURDIR)/debian/tmp/usr/sbin/ovs-vswitchd
rm -f $(CURDIR)/debian/tmp/usr/lib/*/libopenvswitch-2.15.so.0.0.0
+ rm -f $(CURDIR)/debian/tmp/usr/lib/*/libofproto-2.15.so.0.0.0
dh_missing --fail-missing
# openvswitch-switch
@@ -238,6 +246,8 @@
$(CURDIR)/debian/openvswitch-switch-dpdk/usr/lib/openvswitch-switch-dpdk/ovs-vswitchd-dpdk
install -v -D _dpdk/lib/.libs/libopenvswitch-2.15.so.0.0.0 \
$(CURDIR)/debian/openvswitch-switch-dpdk/usr/lib/openvswitch-switch-dpdk/libopenvswitch-2.15.so.0.0.0
+ install -v -D _dpdk/ofproto/.libs/libofproto-2.15.so.0.0.0 \
+
$(CURDIR)/debian/openvswitch-switch-dpdk/usr/lib/openvswitch-switch-dpdk/libofproto-2.15.so.0.0.0
endif
override_dh_installinit:
@@ -254,7 +264,7 @@
dh_strip --dbg-package=openvswitch-dbg
override_dh_shlibdeps:
- dh_shlibdeps -l$(CURDIR)/_debian/lib/.libs
+ dh_shlibdeps
-l$(CURDIR)/_debian/lib/.libs:$(CURDIR)/_debian/ofproto/.libs
override_dh_installman:
echo "Do nothing..."
