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Vulnerability Details : CVE-2013-0914

The flush_signal_handlers function in kernel/signal.c in the Linux kernel before 3.8.4 preserves the value of the sa_restorer field across an exec operation, which makes it easier for local users to bypass the ASLR protection mechanism via a crafted application containing a sigaction system call.
Publish Date : 2013-03-22 Last Update Date : 2014-02-06
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- CVSS Scores & Vulnerability Types

CVSS Score
3.6
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact Partial (Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.)
Availability Impact None (There is no impact to the availability of the system.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Bypass a restriction or similar
CWE ID 264

- Related OVAL Definitions

Title Definition Id Class Family
DSA-2668-1 linux-2.6 - several oval:org.mitre.oval:def:19799 unix
ELSA-2013-1034 -- kernel security and bug fix update (low) oval:org.mitre.oval:def:27495 unix
ELSA-2013-1034-1 -- kernel security and bug fix update (low) oval:org.mitre.oval:def:26661 unix
ELSA-2013-1051 -- kernel security and bug fix update (moderate) oval:org.mitre.oval:def:27457 unix
ELSA-2013-2537 -- unbreakable enterprise kernel security update (moderate) oval:org.mitre.oval:def:27433 unix
ELSA-2013-2538 -- unbreakable enterprise kernel security update (moderate) oval:org.mitre.oval:def:27383 unix
ELSA-2013:1034: kernel security and bug fix update (Low) oval:org.mitre.oval:def:22737 unix
ELSA-2013:1051: kernel security and bug fix update (Moderate) oval:org.mitre.oval:def:23917 unix
RHSA-2013:1034: kernel security and bug fix update (Low) oval:org.mitre.oval:def:21197 unix
RHSA-2013:1034: kernel security and bug fix update (Low) oval:com.redhat.rhsa:def:20131034 unix
RHSA-2013:1051: kernel security and bug fix update (Moderate) oval:org.mitre.oval:def:21235 unix
RHSA-2013:1051: kernel security and bug fix update (Moderate) oval:com.redhat.rhsa:def:20131051 unix
SUSE-SU-2013:0759-2 -- Security update for Linux kernel oval:org.mitre.oval:def:26098 unix
SUSE-SU-2013:0759-1 -- Security update for Linux kernel oval:org.mitre.oval:def:25846 unix
SUSE-SU-2013:1832-1 -- Security update for Linux kernel oval:org.mitre.oval:def:25739 unix
SUSE-SU-2014:0287-1 -- Security update for Linux kernel oval:org.mitre.oval:def:24665 unix
SUSE-SU-2014:0536-1 -- Security update for Linux kernel oval:org.mitre.oval:def:24982 unix
USN-1788-1 -- linux-lts-backport-oneiric vulnerabilities oval:org.mitre.oval:def:18323 unix
USN-1792-1 -- linux vulnerabilities oval:org.mitre.oval:def:18083 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2013-0914

# Product Type Vendor Product Version Update Edition Language
1 OS Linux Linux Kernel 3.8.0 Version Details Vulnerabilities
2 OS Linux Linux Kernel 3.8.1 Version Details Vulnerabilities
3 OS Linux Linux Kernel 3.8.2 Version Details Vulnerabilities
4 OS Linux Linux Kernel 3.8.3 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Linux Linux Kernel 4

- References For CVE-2013-0914

https://bugzilla.redhat.com/show_bug.cgi?id=920499 CONFIRM
http://www.ubuntu.com/usn/USN-1798-1
UBUNTU USN-1798-1
http://www.ubuntu.com/usn/USN-1797-1
UBUNTU USN-1797-1
http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.4 CONFIRM
http://www.mandriva.com/security/advisories?name=MDVSA-2013:176
MANDRIVA MDVSA-2013:176
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=2ca39528c01a933f6689cd6505ce65bd6d68a530 CONFIRM
http://lists.opensuse.org/opensuse-updates/2013-12/msg00129.html
SUSE openSUSE-SU-2013:1971
http://www.openwall.com/lists/oss-security/2013/03/11/8
MLIST [oss-security] 20130311 CVE-2013-0914 Linux kernel sa_restorer information leak
http://www.ubuntu.com/usn/USN-1788-1
UBUNTU USN-1788-1
http://www.ubuntu.com/usn/USN-1793-1
UBUNTU USN-1793-1
http://www.ubuntu.com/usn/USN-1792-1
UBUNTU USN-1792-1
http://www.ubuntu.com/usn/USN-1795-1
UBUNTU USN-1795-1
http://www.ubuntu.com/usn/USN-1794-1
UBUNTU USN-1794-1
http://www.ubuntu.com/usn/USN-1796-1
UBUNTU USN-1796-1
https://github.com/torvalds/linux/commit/2ca39528c01a933f6689cd6505ce65bd6d68a530 CONFIRM
http://lists.opensuse.org/opensuse-security-announce/2013-07/msg00018.html
SUSE openSUSE-SU-2013:1187
http://www.ubuntu.com/usn/USN-1787-1
UBUNTU USN-1787-1
http://rhn.redhat.com/errata/RHSA-2013-1051.html
REDHAT RHSA-2013:1051

- Metasploit Modules Related To CVE-2013-0914

There are not any metasploit modules related to this vulnerability (Please visit www.metasploit.com for more information)


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