Input validation error in Linux kernel - CVE-2011-1080
Published: June 22, 2012 / Updated: August 11, 2020
Vulnerability identifier: #VU43951
CSH Severity: Low
CVSS v4.0: 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/E:U/U:Clear
CVE-ID: CVE-2011-1080
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
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.
How to mitigate CVE-2011-1080
Install update from vendor's website.
Sources
- http://downloads.avaya.com/css/P8/documents/100145416
- http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=d846f71195d57b0bbb143382647c2c6638b04c5a
- http://rhn.redhat.com/errata/RHSA-2011-0833.html
- http://www.openwall.com/lists/oss-security/2011/03/01/10
- https://bugzilla.redhat.com/show_bug.cgi?id=681262
- https://github.com/torvalds/linux/commit/d846f71195d57b0bbb143382647c2c6638b04c5a