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Add EN-19:14, EN-19:15, and SA-19:18 to SA-19:21.

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Approved by:	so
This commit is contained in:
Gordon Tetlow 2019-08-06 17:31:19 +00:00
parent 5d8fe221ff
commit c0889e8ec6
Notes: svn2git 2020-12-08 03:00:23 +00:00 
svn path=/head/; revision=53296
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-----BEGIN PGP SIGNED MESSAGE-----
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=============================================================================
FreeBSD-EN-19:14.epoch Errata Notice
The FreeBSD Project
Topic: Incorrect locking in epoch(9)
Category: core
Module: kernel
Announced: 2019-08-06
Credits: Mark Johnston
Affects: FreeBSD 12.0
Corrected: 2019-07-27 16:11:04 UTC (stable/12, 12.0-STABLE)
2019-08-06 17:07:43 UTC (releng/12.0, 12.0-RELEASE-p9)
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
Some parts of the kernel use a new synchronization primitive, epoch(9),
which can be used to implement safe memory reclamation. In this usage,
threads can use the epoch(9) KPI to ensure that no other threads hold
a reference to a given object in memory.
II. Problem Description
In the case where epoch(9) must wait for a thread that is blocked on
a lock, it will use the turnstile(9) KPI to propagate the current
thread's priority to the lock holder. However, in the case where the
lock has no designated owner - for example, it is a reader-writer lock
owned by one or more readers - a bug in the interaction with the
turnstile meant that pair of spin locks were left locked when they
should have been unlocked.
III. Impact
In rare cases and under heavy load, the kernel may panic or lock up.
IV. Workaround
No workaround is available.
V. Solution
Upgrade your system to a supported FreeBSD stable or release / security
branch (releng) dated after the correction date, and reboot.
1) 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
# shutdown -r +10min "Rebooting for errata update"
2) 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-19:14/epoch.patch
# fetch https://security.FreeBSD.org/patches/EN-19:14/epoch.patch.asc
# gpg --verify epoch.patch.asc
b) Apply the patch. Execute the following commands as root:
# cd /usr/src
# patch < /path/to/patch
c) Recompile your kernel as described in
<URL:https://www.FreeBSD.org/handbook/kernelconfig.html> and reboot the
system.
VI. Correction details
The following list contains the correction revision numbers for each
affected branch.
Branch/path Revision
- -------------------------------------------------------------------------
stable/12/ r350373
releng/12.0/ r350641
- -------------------------------------------------------------------------
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-19:14.epoch.asc>
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=============================================================================
FreeBSD-EN-19:15.libunwind Errata Notice
The FreeBSD Project
Topic: Incorrect exception handling
Category: contrib
Module: libunwind
Announced: 2019-08-06
Affects: FreeBSD 11.2, FreeBSD 12.0
Corrected: 2019-08-06 17:08:30 UTC (releng/12.0, 12.0-RELEASE-p9)
2019-08-06 17:08:30 UTC (releng/11.2, 11.2-RELEASE-p13)
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 libunwind library, which originates from the LLVM project, is responsible
for handling the unwinding of stack frames, when programs throw C or C++
style exceptions. It uses exception handling information embedded in the
executable file to determine the layout of the stack, at the time the
exception is being processed.
II. Problem Description
In some cases, the exception handling information embedded in executables is
not correctly interpreted by libunwind. This causes it to emit a runtime
error, and abort the affected program.
III. Impact
Affected programs will show an message on the standard error stream, when
they attempt to throw an exception:
libunwind: getEncodedP \
/usr/src/contrib/llvm/projects/libunwind/src/AddressSpace.hpp:280 - \
unknown pointer encoding
After this message, the program will be aborted using the abort(3) function,
which usually results in a core dump.
IV. Workaround
No workaround is available.
V. Solution
Upgrade your system to a supported FreeBSD stable or release / security
branch (releng) dated after the correction date, and reboot.
1) 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
2) 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-19:15/libunwind.patch
# fetch https://security.FreeBSD.org/patches/EN-19:15/libunwind.patch.asc
# gpg --verify libunwind.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>, and
reboot the system.
VI. Correction details
The following list contains the correction revision numbers for each
affected branch.
Branch/path Revision
- -------------------------------------------------------------------------
releng/12.0/ r350642
releng/11.2/ r350642
- -------------------------------------------------------------------------
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.freebsd.org/bugzilla/show_bug.cgi?id=234201>
The latest revision of this advisory is available at
<URL:https://security.FreeBSD.org/advisories/FreeBSD-EN-19:15.libunwind.asc>
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=============================================================================
FreeBSD-SA-19:18.bzip2 Security Advisory
The FreeBSD Project
Topic: Multiple vulnerabilities in bzip2
Category: contrib
Module: bzip2
Announced: 2019-08-06
Affects: All supported versions of FreeBSD.
Corrected: 2019-07-04 07:29:18 UTC (stable/12, 12.0-STABLE)
2019-08-06 17:09:47 UTC (releng/12.0, 12.0-RELEASE-p9)
2019-07-04 07:32:25 UTC (stable/11, 11.3-STABLE)
2019-08-06 17:09:47 UTC (releng/11.3, 11.3-RELEASE-p2)
2019-08-06 17:09:47 UTC (releng/11.2, 11.2-RELEASE-p13)
CVE Name: CVE-2016-3189, CVE-2019-12900
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 bzip2(1)/bunzip2(1) utilities and the libbz2 library compress and
decompress files using an algorithm based on the Burrows-Wheeler transform.
They are generally slower than Lempel-Ziv compressors such as gzip, but
usually provide a greater compression ratio.
The bzip2recover utility extracts blocks from a damaged bzip2(1) file,
permitting partial recovery of the contents of the file.
II. Problem Description
The decompressor used in bzip2 contains a bug which can lead to an
out-of-bounds write when processing a specially crafted bzip2(1) file.
bzip2recover contains a heap use-after-free bug which can be triggered
when processing a specially crafted bzip2(1) file.
III. Impact
An attacker who can cause maliciously crafted input to be processed
may trigger either of these bugs. The bzip2recover bug may cause a
crash, permitting a denial-of-service. The bzip2 decompressor bug
could potentially be exploited to execute arbitrary code.
Note that some utilities, including the tar(1) archiver and the bspatch(1)
binary patching utility (used in portsnap(8) and freebsd-update(8))
decompress bzip2(1)-compressed data internally; system administrators should
assume that their systems will at some point decompress bzip2(1)-compressed
data even if they never explicitly invoke the bunzip2(1) utility.
IV. Workaround
No workaround is available.
V. Solution
Upgrade your vulnerable system to a supported FreeBSD stable or
release / security branch (releng) dated after the correction date,
and restart daemons if necessary.
1) 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
2) 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-19:18/bzip2.patch
# fetch https://security.FreeBSD.org/patches/SA-19:18/bzip2.patch.asc
# gpg --verify bzip2.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>.
Restart all daemons that use the library, or reboot the system.
VI. Correction details
The following list contains the correction revision numbers for each
affected branch.
Branch/path Revision
- -------------------------------------------------------------------------
stable/12/ r349717
releng/12.0/ r350643
stable/11/ r349718
releng/11.3/ r350643
releng/11.2/ r350643
- -------------------------------------------------------------------------
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://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-3189>
<URL:https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-12900>
The latest revision of this advisory is available at
<URL:https://security.FreeBSD.org/advisories/FreeBSD-SA-19:18.bzip2.asc>
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=============================================================================
FreeBSD-SA-19:19.mldv2 Security Advisory
The FreeBSD Project
Topic: ICMPv6 / MLDv2 out-of-bounds memory access
Category: core
Module: net
Announced: 2019-08-06
Credits: CJD of Apple
Affects: All supported versions of FreeBSD.
Corrected: 2019-08-06 17:13:41 UTC (stable/12, 12.0-STABLE)
2019-08-06 17:11:17 UTC (releng/12.0, 12.0-RELEASE-p9)
2019-08-06 17:15:46 UTC (stable/11, 11.3-STABLE)
2019-08-06 17:11:17 UTC (releng/11.3, 11.3-RELEASE-p2)
2019-08-06 17:11:17 UTC (releng/11.2, 11.2-RELEASE-p13)
CVE Name: CVE-2019-5608
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
MLDv2 is the Multicast Listener Discovery protocol, version 2. It is used
by IPv6 routers to discover multicast listeners.
II. Problem Description
The ICMPv6 input path incorrectly handles cases where an MLDv2 listener
query packet is internally fragmented across multiple mbufs.
III. Impact
A remote attacker may be able to cause an out-of-bounds read or write that
may cause the kernel to attempt to access an unmapped page and subsequently
panic.
IV. Workaround
No workaround is available. Systems not using IPv6 are not affected.
V. Solution
Perform one of the following:
Upgrade your vulnerable system to a supported FreeBSD stable or
release / security branch (releng) dated after the correction date,
and reboot.
1) 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
# shutdown -r +10min "Reboot for security update"
2) 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.
[FreeBSD 11.2, FreeBSD 11.3]
# fetch https://security.FreeBSD.org/patches/SA-19:19/mldv2.11.patch
# fetch https://security.FreeBSD.org/patches/SA-19:19/mldv2.11.patch.asc
# gpg --verify mldv2.11.patch.asc
[FreeBSD 12.0]
# fetch https://security.FreeBSD.org/patches/SA-19:19/mldv2.12.patch
# fetch https://security.FreeBSD.org/patches/SA-19:19/mldv2.12.patch.asc
# gpg --verify mldv2.12.patch.asc
b) Apply the patch. Execute the following commands as root:
# cd /usr/src
# patch < /path/to/patch
c) Recompile your kernel as described in
<URL:https://www.FreeBSD.org/handbook/kernelconfig.html> and reboot the
system.
VI. Correction details
The following list contains the correction revision numbers for each
affected branch.
Branch/path Revision
- -------------------------------------------------------------------------
stable/12/ r350648
releng/12.0/ r350644
stable/11/ r350650
releng/11.3/ r350644
releng/11.2/ r350644
- -------------------------------------------------------------------------
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://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-5608>
The latest revision of this advisory is available at
<URL:https://security.FreeBSD.org/advisories/FreeBSD-SA-19:19.mldv2.asc>
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=============================================================================
FreeBSD-SA-19:20.bsnmp Security Advisory
The FreeBSD Project
Topic: Insufficient message length validation in bsnmp library
Category: contrib
Module: bsnmp
Announced: 2019-08-06
Credits: Guido Vranken <guidovranken@gmail.com>
Affects: All supported versions of FreeBSD.
Corrected: 2019-08-06 16:11:16 UTC (stable/12, 12.0-STABLE)
2019-08-06 17:12:17 UTC (releng/12.0, 12.0-RELEASE-p9)
2019-08-06 16:12:43 UTC (stable/11, 11.3-STABLE)
2019-08-06 17:12:17 UTC (releng/11.3, 11.3-RELEASE-p2)
2019-08-06 17:12:17 UTC (releng/11.2, 11.2-RELEASE-p13)
CVE Name: CVE-2019-5610
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 bsnmp software library is used for the Internet SNMP (Simple Network
Management Protocol). As part of this it includes functions to handle ASN.1
(Abstract Syntax Notation One).
II. Problem Description
A function extracting the length from type-length-value encoding is not
properly validating the submitted length.
III. Impact
A remote user could cause, for example, an out-of-bounds read, decoding of
unrelated data, or trigger a crash of the software such as bsnmpd resulting
in a denial of service.
IV. Workaround
No workaround is available.
V. Solution
Perform one of the following:
Upgrade your vulnerable system to a supported FreeBSD stable or
release / security branch (releng) dated after the correction date.
1) 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
2) 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-19:20/bsnmp.patch
# fetch https://security.FreeBSD.org/patches/SA-19:20/bsnmp.patch.asc
# gpg --verify bsnmp.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>.
Restart all daemons that use the library, or reboot the system.
VI. Correction details
The following list contains the correction revision numbers for each
affected branch.
Branch/path Revision
- -------------------------------------------------------------------------
stable/12/ r350637
releng/12.0/ r350646
stable/11/ r350638
releng/11.3/ r350646
releng/11.2/ r350646
- -------------------------------------------------------------------------
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://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-5610>
The latest revision of this advisory is available at
<URL:https://security.FreeBSD.org/advisories/FreeBSD-SA-19:20.bsnmp.asc>
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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512
=============================================================================
FreeBSD-SA-19:21.bhyve Security Advisory
The FreeBSD Project
Topic: Insufficient validation of guest-supplied data (e1000 device)
Category: core
Module: bhyve
Announced: 2019-08-06
Credits: Reno Robert
Affects: All supported versions of FreeBSD.
Corrected: 2019-08-05 22:04:16 UTC (stable/12, 12.0-STABLE)
2019-08-06 17:13:17 UTC (releng/12.0, 12.0-RELEASE-p9)
2019-08-05 22:04:16 UTC (stable/11, 11.3-STABLE)
2019-08-06 17:13:17 UTC (releng/11.3, 11.3-RELEASE-p2)
2019-08-06 17:13:17 UTC (releng/11.2, 11.2-RELEASE-p13)
CVE Name: CVE-2019-5609
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
bhyve(8) is a hypervisor that supports running a variety of guest operating
systems in virtual machines. bhyve(8) includes an emulated Intel 82545
network interface adapter ("e1000").
II. Problem Description
The e1000 network adapters permit a variety of modifications to an Ethernet
packet when it is being transmitted. These include the insertion of IP and
TCP checksums, insertion of an Ethernet VLAN header, and TCP segmentation
offload ("TSO"). The e1000 device model uses an on-stack buffer to generate
the modified packet header when simulating these modifications on transmitted
packets.
When TCP segmentation offload is requested for a transmitted packet, the
e1000 device model used a guest-provided value to determine the size of the
on-stack buffer without validation. The subsequent header generation could
overflow an incorrectly sized buffer or indirect a pointer composed of stack
garbage.
III. Impact
A misbehaving bhyve guest could overwrite memory in the bhyve process on the
host.
IV. Workaround
Only the e1000 device model is affected; the virtio-net device is not
affected by this issue. If supported by the guest operating system
presenting only the virtio-net device to the guest is a suitable workaround.
No workaround is available if the e1000 device model is required.
V. Solution
Upgrade your vulnerable system to a supported FreeBSD stable or
release / security branch (releng) dated after the correction date,
and restart any affected virtual machines.
1) 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
2) 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-19:21/bhyve.patch
# fetch https://security.FreeBSD.org/patches/SA-19:21/bhyve.patch.asc
# gpg --verify bhyve.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>.
Restart the applicable virtual machines, or reboot the system.
VI. Correction details
The following list contains the correction revision numbers for each
affected branch.
Branch/path Revision
- -------------------------------------------------------------------------
stable/12/ r350619
releng/12.0/ r350647
stable/11/ r350619
releng/11.3/ r350647
releng/11.2/ r350647
- -------------------------------------------------------------------------
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://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-5609>
The latest revision of this advisory is available at
<URL:https://security.FreeBSD.org/advisories/FreeBSD-SA-19:21.bhyve.asc>
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