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Xin LI 2016-07-25 15:12:34 +00:00
parent c9b1f99b9e
commit eb73329f15
Notes: svn2git 2020-12-08 03:00:23 +00:00 
svn path=/head/; revision=49164
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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512
=============================================================================
FreeBSD-EN-16:09.freebsd-update Errata Notice
The FreeBSD Project
Topic: freebsd-update(8) support of FreeBSD 11.0 release distribution
Category: core
Module: freebsd-update
Announced: 2016-07-25
Affects: All supported versions of FreeBSD.
Corrected: 2016-07-11 04:50:32 UTC (stable/11, 11.0-BETA2)
2016-07-11 04:50:32 UTC (stable/11, 11.0-BETA1-p1)
2016-07-11 04:11:33 UTC (stable/10, 10.3-STABLE)
2016-07-25 15:04:17 UTC (releng/10.3, 10.3-RELEASE-p6)
2016-07-25 15:04:17 UTC (releng/10.2, 10.2-RELEASE-p20)
2016-07-25 15:04:17 UTC (releng/10.1, 10.1-RELEASE-p37)
2016-07-11 04:12:15 UTC (stable/9, 9.3-STABLE)
2016-07-25 15:04:17 UTC (releng/9.3, 9.3-RELEASE-p45)
For general information regarding FreeBSD Errata Notices and Security
Advisories, including descriptions of the fields above, security
branches, and the following sections, please visit
<URL:https://security.FreeBSD.org/>.
I. Background
The freebsd-update(8) utility is used to apply binary patches to FreeBSD
systems installed from official release images, as an alternative to
rebuilding from source.
II. Problem Description
The recent development of FreeBSD has introduced additional release
distribution names, which would fail with the existing freebsd-update(8)
sanity checks.
III. Impact
Upgrading to FreeBSD 11.x from existing FreeBSD releases is not possible
due failing sanity checks.
IV. Workaround
No workaround is available other than patching the freebsd-update(8)
utility, but systems that do not use FreeBSD-provided binary updates
to upgrade are not affected.
V. Solution
Perform one of the following:
1) Upgrade your system to a supported FreeBSD stable or release / security
branch (releng) dated after the correction date.
A reboot is not required.
2) To update your system via a binary patch:
Systems running a RELEASE version of FreeBSD on the i386 or amd64
platforms can be updated via the freebsd-update(8) utility:
# freebsd-update fetch
# freebsd-update install
A reboot is not required.
Please note that for FreeBSD 11.0-BETA1, the freebsd-update utility needs
to be patched manually.
# fetch http://update.freebsd.org/11.0-BETA1/i386/f/6b42aa5e560601bbf30c0b7a6ceed274796c955e6254f7a2fcd393376fe21c55.gz
# gunzip -c < 6b42aa5e560601bbf30c0b7a6ceed274796c955e6254f7a2fcd393376fe21c55.gz > NEW
# sha256 -q NEW
Verify that the output is:
6b42aa5e560601bbf30c0b7a6ceed274796c955e6254f7a2fcd393376fe21c55
# install -m 555 NEW /usr/sbin/freebsd-update
3) To update your system via a source code patch:
The following patches have been verified to apply to the applicable
FreeBSD release branches.
a) Download the relevant patch from the location below, and verify the
detached PGP signature using your PGP utility.
# fetch https://security.FreeBSD.org/patches/EN-16:09/freebsd-update.patch
# fetch https://security.FreeBSD.org/patches/EN-16:09/freebsd-update.patch.asc
# gpg --verify freebsd-update.patch.asc
b) Apply the patch. Execute the following commands as root:
# cd /usr/src
# patch < /path/to/patch
c) Recompile the operating system using buildworld and installworld as
described in <URL:https://www.FreeBSD.org/handbook/makeworld.html>.
VI. Correction details
The following list contains the correction revision numbers for each
affected branch.
Branch/path Revision
- -------------------------------------------------------------------------
stable/9/ r302537
releng/9.3/ r303304
stable/10/ r302536
releng/10.1/ r303304
releng/10.2/ r303304
releng/10.3/ r303304
stable/11/ r302539
- -------------------------------------------------------------------------
To see which files were modified by a particular revision, run the
following command, replacing NNNNNN with the revision number, on a
machine with Subversion installed:
# svn diff -cNNNNNN --summarize svn://svn.freebsd.org/base
Or visit the following URL, replacing NNNNNN with the revision number:
<URL:https://svnweb.freebsd.org/base?view=revision&revision=NNNNNN>
VII. References
The latest revision of this advisory is available at
<URL:https://security.FreeBSD.org/advisories/FreeBSD-EN-16:09.freebsd-update.asc>
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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512
=============================================================================
FreeBSD-SA-16:25.bspatch Security Advisory
The FreeBSD Project
Topic: Heap vulnerability in bspatch
Category: core
Module: bsdiff
Announced: 2016-07-25
Affects: All supported versions of FreeBSD.
Corrected: 2016-07-25 14:52:12 UTC (stable/11, 11.0-BETA2-p1)
2016-07-25 14:52:12 UTC (stable/11, 11.0-BETA1-p1)
2016-07-25 14:53:04 UTC (stable/10, 10.3-STABLE)
2016-07-25 15:04:17 UTC (releng/10.3, 10.3-RELEASE-p6)
2016-07-25 15:04:17 UTC (releng/10.2, 10.2-RELEASE-p20)
2016-07-25 15:04:17 UTC (releng/10.1, 10.1-RELEASE-p37)
2016-07-25 14:53:04 UTC (stable/9, 9.3-STABLE)
2016-07-25 15:04:17 UTC (releng/9.3, 9.3-RELEASE-p45)
CVE Name: CVE-2014-9862
For general information regarding FreeBSD Security Advisories,
including descriptions of the fields above, security branches, and the
following sections, please visit <URL:https://security.FreeBSD.org/>.
I. Background
The bspatch utility generates newfile from oldfile and patchfile where
patchfile is a binary patch built by bsdiff(1).
II. Problem Description
The implementation of bspatch does not check for a negative value on numbers
of bytes read from the diff and extra streams, allowing an attacker who
can control the patch file to write at arbitrary locations in the heap.
This issue was first discovered by The Chromium Project and reported
independently by Lu Tung-Pin to the FreeBSD project.
III. Impact
An attacker who can control the patch file can cause a crash or run arbitrary
code under the credentials of the user who runs bspatch, in many cases, root.
IV. Workaround
No workaround is available.
V. Solution
Perform one of the following:
1) Upgrade your vulnerable system to a supported FreeBSD stable or
release / security branch (releng) dated after the correction date.
No reboot is needed.
2) To update your vulnerable system via a binary patch:
Systems running a RELEASE version of FreeBSD on the i386 or amd64
platforms can be updated via the freebsd-update(8) utility:
# freebsd-update fetch
# freebsd-update install
No reboot is needed.
3) To update your vulnerable system via a source code patch:
The following patches have been verified to apply to the applicable
FreeBSD release branches.
a) Download the relevant patch from the location below, and verify the
detached PGP signature using your PGP utility.
# fetch https://security.FreeBSD.org/patches/SA-16:25/bspatch.patch
# fetch https://security.FreeBSD.org/patches/SA-16:25/bspatch.patch.asc
# gpg --verify bspatch.patch.asc
b) Apply the patch. Execute the following commands as root:
# cd /usr/src
# patch < /path/to/patch
c) Recompile the operating system using buildworld and installworld as
described in <URL:https://www.FreeBSD.org/handbook/makeworld.html>.
VI. Correction details
The following list contains the correction revision numbers for each
affected branch.
Branch/path Revision
- -------------------------------------------------------------------------
stable/9/ r303301
releng/9.3/ r303304
stable/10/ r303301
releng/10.1/ r303304
releng/10.2/ r303304
releng/10.3/ r303304
stable/11/ r303300
- -------------------------------------------------------------------------
To see which files were modified by a particular revision, run the
following command, replacing NNNNNN with the revision number, on a
machine with Subversion installed:
# svn diff -cNNNNNN --summarize svn://svn.freebsd.org/base
Or visit the following URL, replacing NNNNNN with the revision number:
<URL:https://svnweb.freebsd.org/base?view=revision&revision=NNNNNN>
VII. References
<URL:https://bugs.chromium.org/p/chromium/issues/detail?id=372525>
<URL:https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-9862>
The latest revision of this advisory is available at
<URL:https://security.FreeBSD.org/advisories/FreeBSD-SA-16:25.bspatch.asc>
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share/security/patches/EN-16:09/freebsd-update.patch Normal file
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@ -0,0 +1,11 @@
--- usr.sbin/freebsd-update/freebsd-update.sh.orig
+++ usr.sbin/freebsd-update/freebsd-update.sh
@@ -1250,7 +1250,7 @@
# Check that the first four fields make sense.
if gunzip -c < files/$1.gz |
- grep -qvE "^[a-z]+\|[0-9a-z]+\|${P}+\|[fdL-]\|"; then
+ grep -qvE "^[a-z]+\|[0-9a-z-]+\|${P}+\|[fdL-]\|"; then
fetch_metadata_bogus ""
return 1
fi

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@ -0,0 +1,17 @@
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@ -0,0 +1,13 @@
--- usr.bin/bsdiff/bspatch/bspatch.c.orig
+++ usr.bin/bsdiff/bspatch/bspatch.c
@@ -164,6 +164,10 @@
}
/* Sanity-check */
+ if ((ctrl[0] < 0) || (ctrl[1] < 0))
+ errx(1,"Corrupt patch\n");
+
+ /* Sanity-check */
if(newpos+ctrl[0]>newsize)
errx(1,"Corrupt patch\n");

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@ -0,0 +1,17 @@
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12
share/xml/advisories.xml
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@ -7,6 +7,18 @@
<year> <year>
<name>2016</name> <name>2016</name>
<month>
<name>7</name>
<day>
<name>25</name>
<advisory>
<name>FreeBSD-SA-16:25.bspatch</name>
</advisory>
</day>
</month>
<month> <month>
<name>6</name> <name>6</name>

12
share/xml/notices.xml
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@ -7,6 +7,18 @@
<year> <year>
<name>2016</name> <name>2016</name>
<month>
<name>7</name>
<day>
<name>25</name>
<notice>
<name>FreeBSD-EN-16:09.freebsd-update</name>
</notice>
</day>
</month>
<month> <month>
<name>5</name> <name>5</name>