Permissions, Privileges, and Access Controls in Linux kernel - CVE-2013-0914

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Main Vulnerability Database Vulnerabilities #VU42962

Permissions, Privileges, and Access Controls in Linux kernel - CVE-2013-0914

Published: March 22, 2013 / Updated: August 11, 2020


Vulnerability identifier: #VU42962
CSH Severity: Medium
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2013-0914
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

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.


Affected software

Linux kernel
Ubuntu
linux (Ubuntu package)
linux-image-2.6.32-351-ec2 (Ubuntu package)
linux-lts-backport-oneiric (Ubuntu package)
linux-lts-quantal (Ubuntu package)

How to mitigate CVE-2013-0914

Install update from vendor's website.

linux (Ubuntu package) - addressed in versions 2.6.32-46.107, 3.0.0-32.51, 3.2.0-40.64, 3.5.0-27.46
linux-image-2.6.32-351-ec2 (Ubuntu package) - update to 2.6.32-351.63
linux-lts-backport-oneiric (Ubuntu package) - update to 3.0.0-32.51~lucid1
linux-lts-quantal (Ubuntu package) - update to 3.5.0-27.46~precise1

External References

Related Security Bulletins