CVE-2013-2094: Linux Kernel Privilege Escalation Vulnerability
First published: Tue May 14 2013(Updated: )
A flaw was found in the way index into perf_swevent_enabled array was sanitized. A local unprivileged user can use this flaw to increase their privileges on the system. Introduced by: <a href="http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b0a873ebbf87bf38bf70b5e39a7cadc96099fa13">http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b0a873ebbf87bf38bf70b5e39a7cadc96099fa13</a> Upstream fix: <a href="http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8176cced706b5e5d15887584150764894e94e02f">http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8176cced706b5e5d15887584150764894e94e02f</a> References: <a href="http://lkml.indiana.edu/hypermail/linux/kernel/1304.1/03652.html">http://lkml.indiana.edu/hypermail/linux/kernel/1304.1/03652.html</a> <a href="https://news.ycombinator.com/item?id=5703758">https://news.ycombinator.com/item?id=5703758</a> <a href="http://packetstormsecurity.com/files/121616/semtex.c">http://packetstormsecurity.com/files/121616/semtex.c</a>
Credit: secalert@redhat.com secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Red Hat Kernel-devel | ||
| Linux Kernel | <=3.8.8 | |
| Linux Kernel | =3.8.0 | |
| Linux Kernel | =3.8.1 | |
| Linux Kernel | =3.8.2 | |
| Linux Kernel | =3.8.3 | |
| Linux Kernel | =3.8.4 | |
| Linux Kernel | =3.8.5 | |
| Linux Kernel | =3.8.6 | |
| Linux Kernel | =3.8.7 | |
| Linux Kernel | <3.0.75 | |
| Linux Kernel | >=3.1<3.2.45 | |
| Linux Kernel | >=3.3<3.4.42 | |
| Linux Kernel | >=3.5<3.8.9 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.129-1 6.1.133-1 6.12.21-1 6.12.22-1 |
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Reference Links
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=8176cced706b5e5d15887584150764894e94e02f
- http://lists.centos.org/pipermail/centos-announce/2013-May/019729.html
- http://lists.centos.org/pipermail/centos-announce/2013-May/019733.html
- http://lists.opensuse.org/opensuse-security-announce/2013-05/msg00008.html
- http://lists.opensuse.org/opensuse-security-announce/2013-05/msg00018.html
- http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00005.html
- http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00009.html
- http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00017.html
- http://lkml.indiana.edu/hypermail/linux/kernel/1304.1/03652.html
- http://lkml.indiana.edu/hypermail/linux/kernel/1304.1/03976.html
- http://lkml.indiana.edu/hypermail/linux/kernel/1304.1/04302.html
- http://news.ycombinator.com/item?id=5703758
- http://packetstormsecurity.com/files/121616/semtex.c
- http://rhn.redhat.com/errata/RHSA-2013-0830.html
- http://twitter.com/djrbliss/statuses/334301992648331267
- http://www.exploit-db.com/exploits/33589
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.9
- http://www.mandriva.com/security/advisories?name=MDVSA-2013:176
- http://www.openwall.com/lists/oss-security/2013/05/14/6
- http://www.osvdb.org/93361
- http://www.reddit.com/r/netsec/comments/1eb9iw
- http://www.ubuntu.com/usn/USN-1825-1
- http://www.ubuntu.com/usn/USN-1826-1
- http://www.ubuntu.com/usn/USN-1827-1
- http://www.ubuntu.com/usn/USN-1828-1
- http://www.ubuntu.com/usn/USN-1836-1
- http://www.ubuntu.com/usn/USN-1838-1
- https://bugzilla.redhat.com/show_bug.cgi?id=962792
- https://github.com/torvalds/linux/commit/8176cced706b5e5d15887584150764894e94e02f
- https://launchpad.net/bugs/cve/CVE-2013-2094
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b0a873ebbf87bf38bf70b5e39a7cadc96099fa13
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=8176cced706b5e5d15887584150764894e94e02f
- https://news.ycombinator.com/item?id=5703758
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=962799
- https://rhn.redhat.com/errata/RHSA-2013-0830.html
- https://rhn.redhat.com/errata/RHSA-2013-0841.html
- https://rhn.redhat.com/errata/RHSA-2013-0840.html
- https://rhn.redhat.com/errata/RHSA-2013-0832.html
- https://rhn.redhat.com/errata/RHSA-2013-0829.html
- https://access.redhat.com/site/solutions/373743
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=962792#c7
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=962792#c14
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=962792#c0
- http://danwalsh.livejournal.com/16368.html
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=962792#c20
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=962792#c21
- https://access.redhat.com/security/cve/CVE-2013-2094
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=962792#c27
- http://rhn.redhat.com/errata/RHSA-2011-0542.html
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=962792#c28
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=962792#c13
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=962792#c32
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=962792#c34
- https://access.redhat.com/site/solutions/372873
- http://elrepo.org/tiki/kmod-tpe
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=962792#c40
- https://github.com/cormander/tpe-lkm
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=962792#c38
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=962792#c31
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=962792#c37
- http://people.centos.org/hughesjr/c6kernel/2.6.32-358.6.1.el6.cve20132094/
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=962792#c45
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=962792#c36
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=962792#c49
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=962792#c50
- https://access.redhat.com/site/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/SystemTap_Beginners_Guide/using-systemtap.html
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=962792#c53
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=962792#c52
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=962792#c56
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=962792#c57
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=962792#c62
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=962792#c68
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=962792#c78
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=8176cced706b5e5d15887584150764894e94e02f;
- https://nvd.nist.gov/vuln/detail/CVE-2013-2094
- https://security-tracker.debian.org/tracker/CVE-2013-2094
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-2094
- https://ubuntu.com/security/CVE-2013-2094
Frequently Asked Questions
What is the severity of CVE-2013-2094?
CVE-2013-2094 has a moderate severity level as it allows local unprivileged users to potentially escalate their privileges.
How do I fix CVE-2013-2094?
To fix CVE-2013-2094, upgrade to a patched version of the Linux kernel listed in the vulnerability details.
What systems are affected by CVE-2013-2094?
CVE-2013-2094 affects multiple versions of the Linux kernel from versions prior to 3.9 and specific versions up to 6.12.10.
Who discovered CVE-2013-2094?
CVE-2013-2094 was discovered in the Linux kernel by the open-source community during routine audits.
Is there a workaround for CVE-2013-2094?
There are no specific workarounds for CVE-2013-2094; updating the kernel is the recommended action.
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