Input validation error in Linux kernel - CVE-2011-1080

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Main Vulnerability Database Vulnerabilities #VU43951

Input validation error in Linux kernel - CVE-2011-1080

Published: June 22, 2012 / Updated: August 11, 2020


Vulnerability identifier: #VU43951
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2011-1080
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

The do_replace function in net/bridge/netfilter/ebtables.c in the Linux kernel before 2.6.39 does not ensure that a certain name field ends with a '' character, which allows local users to obtain potentially sensitive information from kernel stack memory by leveraging the CAP_NET_ADMIN capability to replace a table, and then reading a modprobe command line.


Affected software

Linux kernel
Ubuntu
linux (Ubuntu package)
linux-lts-backport-maverick (Ubuntu package)
linux-lts-backport-natty (Ubuntu package)

How to mitigate CVE-2011-1080

Install update from vendor's website.

linux (Ubuntu package) - addressed in versions 2.6.24-29.93, 2.6.32-32.62, 2.6.35-30.54, 2.6.38-10.46
linux-lts-backport-maverick (Ubuntu package) - update to 2.6.35-30.56~lucid1
linux-lts-backport-natty (Ubuntu package) - update to 2.6.38-12.51~lucid1

External References

Related Security Bulletins