Bug 822579 (CVE-2013-2852) - VUL-1: kernel: CVE-2013-2852: b43 driver format string flaw
Summary: VUL-1: kernel: CVE-2013-2852: b43 driver format string flaw
Status: RESOLVED FIXED
Alias: CVE-2013-2852
Product: SUSE Security Incidents
Classification: Novell Products
Component: Incidents (show other bugs)
Version: unspecified
Hardware: Other Other
: P4 - Low : Minor
Target Milestone: ---
Deadline: 2013-07-09
Assignee: Security Team bot
QA Contact: Security Team bot
URL:
Whiteboard: maint:released:sle11-sp1:53377 maint:...
Keywords:
Depends on:
Blocks:
 
Reported: 2013-05-31 08:45 UTC by Alexander Bergmann
Modified: 2015-02-19 03:32 UTC (History)
2 users (show)

See Also:
Found By: ---
Services Priority:
Business Priority:
Blocker: ---
Marketing QA Status: ---
IT Deployment: ---

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Description Alexander Bergmann 2013-05-31 08:45:25 UTC 
CRD: 2013-06-06 1700 UTC

Via: distros@vs.openwall.org
From: Kees Cook
Subject: [vs-plain] Linux kernel b43 driver format string flaw (CVE-2013-2852)

I've found an issue in the Linux b43 driver code. It should be
considered embargoed; it has not been disclosed publicly. Please keep
linux-distros@vs.openwall.org[1] CC'd for any updates on this issue.

I am requesting a coordinated release date (CRD) of 2013-06-06 1700 UTC.
Please keep this issue private until the CRD[2]. If you or members of
linux-distros@vs.openwall.org do not request another date, I can go ahead
and make this bug public on the CRD.

It has been assigned CVE-2013-2852; please mention this in any changelogs.

The flaw is that the b43 driver reports error strings that can be
interpreted as format strings. Under normal conditions, this is not
a problem, but it is possible for the "fwpostfix" module parameter to
change the filenames used to fetch firmware. When such a file is not
found, the filename will be processed as a format string. This flaw
could potentially allow escalation from uid-0 to ring-0, so except for
certain environments, it is not too serious.

If b43 hardware is available, this should show itself easily. I don't have
any available for testing, but it seems it would show itself like this:
# rmmod b43
# modprobe b43 fwpostfix=AA%xBB
...
# dmesg
...
b43-0 ERROR: Firmware file "b43AAdeff80ccBB/a0g1bsinitvals5.fw" not found

Using %n instead of %x would lead to exciting crashes. :)

Attached is a proposed fix. Thanks in advance for your cooperation in
coordinating a fix for this issue,

-Kees

[1] linux-distros@vs.openwall.org is a private mailing list for
    distributors of operating systems to collaborate on security
    vulnerabilities and coordinate security updates. Discussions
    on linux-distros@vs.openwall.org are considered private and should
    not be made public, though the result of the discussions may be
    made public after the coordinated release date.

[2] Please do not release a fix, make public revision control commits,
    comment in public bug reports or otherwise disclose information
    about this issue until the coordinated release date. This gives all
    affected parties a chance to release a fix at the same time.
Comment 1 Alexander Bergmann 2013-05-31 08:46:49 UTC 
Created attachment 542079 [details]
Fix for CVE-2013-2852.
Comment 2 Swamp Workflow Management 2013-05-31 22:00:32 UTC 
bugbot adjusting priority
Comment 3 Alexander Bergmann 2013-06-07 00:51:34 UTC 
Now public via oss-security.
Comment 5 Michal Hocko 2013-06-07 01:42:14 UTC 
This has been introduced by 1a9f5093 (b43: Automatically probe for opensource firmware) in 2.6.30 AFAICS, so only SLE11-SP1 and above are affected.

Anyway, pushed to SLE11-SP1-TD.
Comment 6 Marcus Meissner 2013-06-28 03:39:45 UTC 
3.0.83 has the fix
Comment 8 Swamp Workflow Management 2013-07-02 10:47:11 UTC 
The SWAMPID for this issue is 53376.
This issue was rated as important.
Please submit fixed packages until 2013-07-09.
Also create a patchinfo file using this link:
https://swamp.suse.de/webswamp/wf/53376
Comment 9 Swamp Workflow Management 2013-07-10 08:09:18 UTC 
Update released for: kernel-default, kernel-default-base, kernel-default-debuginfo, kernel-default-debugsource, kernel-default-devel, kernel-default-devel-debuginfo, kernel-default-extra, kernel-source, kernel-source-debuginfo, kernel-source-vanilla, kernel-syms, kernel-trace, kernel-trace-base, kernel-trace-debuginfo, kernel-trace-debugsource, kernel-trace-devel, kernel-trace-devel-debuginfo, kernel-trace-extra, kernel-xen, kernel-xen-base, kernel-xen-debuginfo, kernel-xen-debugsource, kernel-xen-devel, kernel-xen-devel-debuginfo, kernel-xen-extra, xen-kmp-default, xen-kmp-trace
Products:
SLE-SERVER 11-SP1-TERADATA (x86_64)
Comment 10 Jeff Mahoney 2013-08-01 18:39:42 UTC 
Applied to openSUSE 12.2 via 3.4.50.
Applied to openSUSE 12.3.
Applied upstream in 3.10 so no newer releases are affected.
Comment 11 Marcus Meissner 2013-09-20 14:44:40 UTC 
We have just released a kernel update for SUSE Linux Enterprise 11 SP3 that mentions/fixes this bug. The released version is 3.0.93-0.8.2.
Comment 12 Swamp Workflow Management 2013-09-20 16:52:04 UTC 
Update released for: cluster-network-kmp-default, cluster-network-kmp-trace, gfs2-kmp-default, gfs2-kmp-trace, kernel-default, kernel-default-base, kernel-default-debuginfo, kernel-default-debugsource, kernel-default-devel, kernel-default-devel-debuginfo, kernel-default-extra, kernel-default-hmac, kernel-source, kernel-source-debuginfo, kernel-source-vanilla, kernel-syms, kernel-trace, kernel-trace-base, kernel-trace-debuginfo, kernel-trace-debugsource, kernel-trace-devel, kernel-trace-devel-debuginfo, kernel-trace-extra, kernel-trace-hmac, ocfs2-kmp-default, ocfs2-kmp-trace
Products:
SLE-DEBUGINFO 11-SP3 (ia64)
SLE-HAE 11-SP3 (ia64)
SLE-SERVER 11-SP3 (ia64)
Comment 13 Swamp Workflow Management 2013-09-20 17:05:36 UTC 
Update released for: cluster-network-kmp-default, cluster-network-kmp-trace, gfs2-kmp-default, gfs2-kmp-trace, kernel-default, kernel-default-base, kernel-default-debuginfo, kernel-default-debugsource, kernel-default-devel, kernel-default-devel-debuginfo, kernel-default-extra, kernel-default-hmac, kernel-default-man, kernel-source, kernel-source-debuginfo, kernel-source-vanilla, kernel-syms, kernel-trace, kernel-trace-base, kernel-trace-debuginfo, kernel-trace-debugsource, kernel-trace-devel, kernel-trace-devel-debuginfo, kernel-trace-extra, kernel-trace-hmac, kernel-trace-man, ocfs2-kmp-default, ocfs2-kmp-trace
Products:
SLE-DEBUGINFO 11-SP3 (s390x)
SLE-HAE 11-SP3 (s390x)
SLE-SERVER 11-SP3 (s390x)
Comment 14 Swamp Workflow Management 2013-09-20 17:12:17 UTC 
Update released for: cluster-network-kmp-default, cluster-network-kmp-ppc64, cluster-network-kmp-trace, gfs2-kmp-default, gfs2-kmp-ppc64, gfs2-kmp-trace, kernel-default, kernel-default-base, kernel-default-debuginfo, kernel-default-debugsource, kernel-default-devel, kernel-default-extra, kernel-default-hmac, kernel-ppc64, kernel-ppc64-base, kernel-ppc64-debuginfo, kernel-ppc64-debugsource, kernel-ppc64-devel, kernel-ppc64-extra, kernel-ppc64-hmac, kernel-source, kernel-source-debuginfo, kernel-source-vanilla, kernel-syms, kernel-trace, kernel-trace-base, kernel-trace-debuginfo, kernel-trace-debugsource, kernel-trace-devel, kernel-trace-extra, kernel-trace-hmac, ocfs2-kmp-default, ocfs2-kmp-ppc64, ocfs2-kmp-trace
Products:
SLE-DEBUGINFO 11-SP3 (ppc64)
SLE-HAE 11-SP3 (ppc64)
SLE-SERVER 11-SP3 (ppc64)
Comment 15 Swamp Workflow Management 2013-09-20 17:25:03 UTC 
Update released for: cluster-network-kmp-default, cluster-network-kmp-trace, cluster-network-kmp-xen, gfs2-kmp-default, gfs2-kmp-trace, gfs2-kmp-xen, kernel-default, kernel-default-base, kernel-default-debuginfo, kernel-default-debugsource, kernel-default-devel, kernel-default-devel-debuginfo, kernel-default-extra, kernel-default-hmac, kernel-desktop-devel, kernel-ec2, kernel-ec2-base, kernel-ec2-debuginfo, kernel-ec2-debugsource, kernel-ec2-devel, kernel-ec2-devel-debuginfo, kernel-ec2-extra, kernel-ec2-hmac, kernel-source, kernel-source-debuginfo, kernel-source-vanilla, kernel-syms, kernel-trace, kernel-trace-base, kernel-trace-debuginfo, kernel-trace-debugsource, kernel-trace-devel, kernel-trace-devel-debuginfo, kernel-trace-extra, kernel-trace-hmac, kernel-xen, kernel-xen-base, kernel-xen-debuginfo, kernel-xen-debugsource, kernel-xen-devel, kernel-xen-devel-debuginfo, kernel-xen-extra, kernel-xen-hmac, ocfs2-kmp-default, ocfs2-kmp-trace, ocfs2-kmp-xen, xen-kmp-default, xen-kmp-trace
Products:
SLE-DEBUGINFO 11-SP3 (x86_64)
SLE-DESKTOP 11-SP3 (x86_64)
SLE-HAE 11-SP3 (x86_64)
SLE-SERVER 11-SP3 (x86_64)
SLES4VMWARE 11-SP3 (x86_64)
Comment 16 Swamp Workflow Management 2013-09-20 17:49:43 UTC 
Update released for: cluster-network-kmp-default, cluster-network-kmp-pae, cluster-network-kmp-trace, cluster-network-kmp-xen, gfs2-kmp-default, gfs2-kmp-pae, gfs2-kmp-trace, gfs2-kmp-xen, kernel-default, kernel-default-base, kernel-default-devel, kernel-default-extra, kernel-default-hmac, kernel-desktop-devel, kernel-ec2, kernel-ec2-base, kernel-ec2-devel, kernel-ec2-extra, kernel-ec2-hmac, kernel-pae, kernel-pae-base, kernel-pae-devel, kernel-pae-extra, kernel-pae-hmac, kernel-source, kernel-source-vanilla, kernel-syms, kernel-trace, kernel-trace-base, kernel-trace-devel, kernel-trace-extra, kernel-trace-hmac, kernel-xen, kernel-xen-base, kernel-xen-devel, kernel-xen-extra, kernel-xen-hmac, ocfs2-kmp-default, ocfs2-kmp-pae, ocfs2-kmp-trace, ocfs2-kmp-xen, xen-kmp-default, xen-kmp-pae, xen-kmp-trace
Products:
SLE-DEBUGINFO 11-SP3 (i386)
SLE-DESKTOP 11-SP3 (i386)
SLE-HAE 11-SP3 (i386)
SLE-SERVER 11-SP3 (i386)
SLES4VMWARE 11-SP3 (i386)
Comment 17 Swamp Workflow Management 2013-09-20 22:08:56 UTC 
Update released for: kernel-default-extra, kernel-ppc64-extra
Products:
SLE-SERVER 11-EXTRA (ppc64)
Comment 18 Swamp Workflow Management 2013-09-21 01:07:36 UTC 
Update released for: kernel-default-extra, kernel-xen-extra
Products:
SLE-SERVER 11-EXTRA (x86_64)
Comment 19 Swamp Workflow Management 2013-09-21 04:11:17 UTC 
Update released for: kernel-default-extra
Products:
SLE-SERVER 11-EXTRA (ia64)
Comment 20 Swamp Workflow Management 2013-09-21 05:11:38 UTC 
Update released for: kernel-default-extra
Products:
SLE-SERVER 11-EXTRA (s390x)
Comment 21 Swamp Workflow Management 2013-09-21 06:12:17 UTC 
Update released for: kernel-default-extra, kernel-pae-extra, kernel-xen-extra
Products:
SLE-SERVER 11-EXTRA (i386)
Comment 22 Swamp Workflow Management 2013-10-07 17:06:33 UTC 
Update released for: cluster-network-kmp-rt, cluster-network-kmp-rt_trace, drbd-kmp-rt, drbd-kmp-rt_trace, iscsitarget-kmp-rt, iscsitarget-kmp-rt_trace, kernel-rt, kernel-rt-base, kernel-rt-debuginfo, kernel-rt-debugsource, kernel-rt-devel, kernel-rt-devel-debuginfo, kernel-rt-extra, kernel-rt-hmac, kernel-rt_trace, kernel-rt_trace-base, kernel-rt_trace-debuginfo, kernel-rt_trace-debugsource, kernel-rt_trace-devel, kernel-rt_trace-devel-debuginfo, kernel-rt_trace-extra, kernel-rt_trace-hmac, kernel-source-rt, kernel-syms-rt, lttng-modules-kmp-rt, lttng-modules-kmp-rt_trace, ocfs2-kmp-rt, ocfs2-kmp-rt_trace, ofed-kmp-rt, ofed-kmp-rt_trace
Products:
SLE-DEBUGINFO 11-SP3 (x86_64)
SLE-RT 11-SP3 (x86_64)
Comment 23 Swamp Workflow Management 2013-12-30 20:13:21 UTC 
openSUSE-SU-2013:1971-1: An update that solves 34 vulnerabilities and has 19 fixes is now available.

Category: security (moderate)
Bug References: 799516,801341,802347,804198,807153,807188,807471,808827,809906,810144,810473,811882,812116,813733,813889,814211,814336,814510,815256,815320,816668,816708,817651,818053,818561,821612,821735,822575,822579,823267,823342,823517,823633,823797,824171,824295,826102,826350,826374,827749,827750,828119,828191,828714,829539,831058,831956,832615,833321,833585,834647,837258,838346
CVE References: CVE-2013-0914,CVE-2013-1059,CVE-2013-1819,CVE-2013-1929,CVE-2013-1979,CVE-2013-2141,CVE-2013-2148,CVE-2013-2164,CVE-2013-2206,CVE-2013-2232,CVE-2013-2234,CVE-2013-2237,CVE-2013-2546,CVE-2013-2547,CVE-2013-2548,CVE-2013-2634,CVE-2013-2635,CVE-2013-2851,CVE-2013-2852,CVE-2013-3222,CVE-2013-3223,CVE-2013-3224,CVE-2013-3226,CVE-2013-3227,CVE-2013-3228,CVE-2013-3229,CVE-2013-3230,CVE-2013-3231,CVE-2013-3232,CVE-2013-3233,CVE-2013-3234,CVE-2013-3235,CVE-2013-3301,CVE-2013-4162
Sources used:
openSUSE 12.3 (src):    kernel-docs-3.7.10-1.24.1, kernel-source-3.7.10-1.24.1, kernel-syms-3.7.10-1.24.1
Comment 24 Swamp Workflow Management 2014-02-24 08:55:23 UTC 
Update released for: btrfs-kmp-default, btrfs-kmp-pae, btrfs-kmp-trace, btrfs-kmp-xen, cluster-network-kmp-default, cluster-network-kmp-pae, cluster-network-kmp-trace, cluster-network-kmp-xen, ext4dev-kmp-default, ext4dev-kmp-pae, ext4dev-kmp-trace, ext4dev-kmp-xen, gfs2-kmp-default, gfs2-kmp-pae, gfs2-kmp-trace, gfs2-kmp-xen, hyper-v-kmp-default, hyper-v-kmp-pae, hyper-v-kmp-trace, kernel-default, kernel-default-base, kernel-default-debuginfo, kernel-default-debugsource, kernel-default-devel, kernel-default-devel-debuginfo, kernel-default-extra, kernel-desktop-devel, kernel-ec2, kernel-ec2-base, kernel-ec2-debuginfo, kernel-ec2-debugsource, kernel-ec2-devel, kernel-ec2-devel-debuginfo, kernel-ec2-extra, kernel-pae, kernel-pae-base, kernel-pae-debuginfo, kernel-pae-debugsource, kernel-pae-devel, kernel-pae-devel-debuginfo, kernel-pae-extra, kernel-source, kernel-source-debuginfo, kernel-source-vanilla, kernel-syms, kernel-trace, kernel-trace-base, kernel-trace-debuginfo, kernel-trace-debugsource, kernel-trace-devel, kernel-trace-devel-debuginfo, kernel-trace-extra, kernel-xen, kernel-xen-base, kernel-xen-debuginfo, kernel-xen-debugsource, kernel-xen-devel, kernel-xen-devel-debuginfo, kernel-xen-extra, ocfs2-kmp-default, ocfs2-kmp-pae, ocfs2-kmp-trace, ocfs2-kmp-xen
Products:
SLE-DEBUGINFO 11-SP1 (i386)
SLE-SERVER 11-SP1-LTSS (i386)
Comment 25 Swamp Workflow Management 2014-02-24 08:55:53 UTC 
Update released for: btrfs-kmp-default, btrfs-kmp-trace, cluster-network-kmp-default, cluster-network-kmp-trace, ext4dev-kmp-default, ext4dev-kmp-trace, gfs2-kmp-default, gfs2-kmp-trace, kernel-default, kernel-default-base, kernel-default-debuginfo, kernel-default-debugsource, kernel-default-devel, kernel-default-devel-debuginfo, kernel-default-extra, kernel-default-man, kernel-source, kernel-source-debuginfo, kernel-source-vanilla, kernel-syms, kernel-trace, kernel-trace-base, kernel-trace-debuginfo, kernel-trace-debugsource, kernel-trace-devel, kernel-trace-devel-debuginfo, kernel-trace-extra, kernel-trace-man, ocfs2-kmp-default, ocfs2-kmp-trace
Products:
SLE-DEBUGINFO 11-SP1 (s390x)
SLE-SERVER 11-SP1-LTSS (s390x)
Comment 26 Swamp Workflow Management 2014-02-24 09:56:30 UTC 
Update released for: btrfs-kmp-default, btrfs-kmp-trace, btrfs-kmp-xen, cluster-network-kmp-default, cluster-network-kmp-trace, cluster-network-kmp-xen, ext4dev-kmp-default, ext4dev-kmp-trace, ext4dev-kmp-xen, gfs2-kmp-default, gfs2-kmp-trace, gfs2-kmp-xen, hyper-v-kmp-default, hyper-v-kmp-trace, kernel-default, kernel-default-base, kernel-default-debuginfo, kernel-default-debugsource, kernel-default-devel, kernel-default-devel-debuginfo, kernel-default-extra, kernel-desktop-devel, kernel-ec2, kernel-ec2-base, kernel-ec2-debuginfo, kernel-ec2-debugsource, kernel-ec2-devel, kernel-ec2-devel-debuginfo, kernel-ec2-extra, kernel-source, kernel-source-debuginfo, kernel-source-vanilla, kernel-syms, kernel-trace, kernel-trace-base, kernel-trace-debuginfo, kernel-trace-debugsource, kernel-trace-devel, kernel-trace-devel-debuginfo, kernel-trace-extra, kernel-xen, kernel-xen-base, kernel-xen-debuginfo, kernel-xen-debugsource, kernel-xen-devel, kernel-xen-devel-debuginfo, kernel-xen-extra, ocfs2-kmp-default, ocfs2-kmp-trace, ocfs2-kmp-xen
Products:
SLE-DEBUGINFO 11-SP1 (x86_64)
SLE-SERVER 11-SP1-LTSS (x86_64)
Comment 27 Swamp Workflow Management 2014-02-24 14:26:42 UTC 
SUSE-SU-2014:0287-1: An update that solves 84 vulnerabilities and has 41 fixes is now available.

Category: security (moderate)
Bug References: 714906,715250,735347,744955,745640,748896,752544,754898,760596,761774,762099,762366,763463,763654,767610,767612,768668,769644,769896,770695,771706,771992,772849,773320,773383,773577,773640,773831,774523,775182,776024,776144,776885,777473,780004,780008,780572,782178,785016,786013,787573,787576,789648,789831,795354,797175,798050,800280,801178,802642,803320,804154,804653,805226,805227,805945,806138,806976,806977,806980,807320,808358,808827,809889,809891,809892,809893,809894,809898,809899,809900,809901,809902,809903,810045,810473,811354,812364,813276,813735,814363,814716,815352,815745,816668,817377,818337,818371,820338,822575,822579,823260,823267,823618,824159,824295,825227,826707,827416,827749,827750,828012,828119,833820,835094,835481,835839,840226,840858,845028,847652,847672,848321,849021,851095,851103,852558,852559,853050,853051,853052,856917,858869,858870,858872
CVE References: CVE-2011-1083,CVE-2011-3593,CVE-2012-1601,CVE-2012-2137,CVE-2012-2372,CVE-2012-2745,CVE-2012-3375,CVE-2012-3412,CVE-2012-3430,CVE-2012-3511,CVE-2012-4444,CVE-2012-4530,CVE-2012-4565,CVE-2012-6537,CVE-2012-6538,CVE-2012-6539,CVE-2012-6540,CVE-2012-6541,CVE-2012-6542,CVE-2012-6544,CVE-2012-6545,CVE-2012-6546,CVE-2012-6547,CVE-2012-6548,CVE-2012-6549,CVE-2013-0160,CVE-2013-0216,CVE-2013-0231,CVE-2013-0268,CVE-2013-0310,CVE-2013-0343,CVE-2013-0349,CVE-2013-0871,CVE-2013-0914,CVE-2013-1767,CVE-2013-1773,CVE-2013-1774,CVE-2013-1792,CVE-2013-1796,CVE-2013-1797,CVE-2013-1798,CVE-2013-1827,CVE-2013-1928,CVE-2013-1943,CVE-2013-2015,CVE-2013-2141,CVE-2013-2147,CVE-2013-2164,CVE-2013-2232,CVE-2013-2234,CVE-2013-2237,CVE-2013-2634,CVE-2013-2851,CVE-2013-2852,CVE-2013-2888,CVE-2013-2889,CVE-2013-2892,CVE-2013-2893,CVE-2013-2897,CVE-2013-2929,CVE-2013-3222,CVE-2013-3223,CVE-2013-3224,CVE-2013-3225,CVE-2013-3228,CVE-2013-3229,CVE-2013-3231,CVE-2013-3232,CVE-2013-3234,CVE-2013-3235,CVE-2013-4345,CVE-2013-4470,CVE-2013-4483,CVE-2013-4511,CVE-2013-4587,CVE-2013-4588,CVE-2013-4591,CVE-2013-6367,CVE-2013-6368,CVE-2013-6378,CVE-2013-6383,CVE-2014-1444,CVE-2014-1445,CVE-2014-1446
Sources used:
SUSE Linux Enterprise Server 11 SP1 LTSS (src):    btrfs-0-0.3.151, ext4dev-0-7.9.118, hyper-v-0-0.18.37, kernel-default-2.6.32.59-0.9.1, kernel-ec2-2.6.32.59-0.9.1, kernel-pae-2.6.32.59-0.9.1, kernel-source-2.6.32.59-0.9.1, kernel-syms-2.6.32.59-0.9.1, kernel-trace-2.6.32.59-0.9.1, kernel-xen-2.6.32.59-0.9.1
SLE 11 SERVER Unsupported Extras (src):    kernel-default-2.6.32.59-0.9.1, kernel-pae-2.6.32.59-0.9.1, kernel-xen-2.6.32.59-0.9.1
Comment 28 Swamp Workflow Management 2014-02-24 14:43:04 UTC 
Update released for: kernel-default-extra, kernel-xen-extra
Products:
SLE-SERVER 11-EXTRA (x86_64)
Comment 29 Swamp Workflow Management 2014-02-24 15:12:50 UTC 
Update released for: kernel-default-extra, kernel-pae-extra, kernel-xen-extra
Products:
SLE-SERVER 11-EXTRA (i386)
Comment 30 Swamp Workflow Management 2014-02-24 16:14:47 UTC 
Update released for: kernel-default-extra
Products:
SLE-SERVER 11-EXTRA (s390x)