SB2013112009 - Buffer overflow in Linux kernel
Published: November 20, 2013 Updated: August 10, 2020
Security Bulletin ID
SB2013112009
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Buffer overflow (CVE-ID: CVE-2013-4591)
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
Buffer overflow in the __nfs4_get_acl_uncached function in fs/nfs/nfs4proc.c in the Linux kernel before 3.7.2 allows local users to cause a denial of service (memory corruption and system crash) or possibly have unspecified other impact via a getxattr system call for the system.nfs4_acl extended attribute of a pathname on an NFSv4 filesystem.
Remediation
Install update from vendor's website.
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=7d3e91a89b7adbc2831334def9e494dd9892f9af
- http://rhn.redhat.com/errata/RHSA-2013-1645.html
- http://rhn.redhat.com/errata/RHSA-2014-0284.html
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.7.2
- http://www.openwall.com/lists/oss-security/2013/11/18/2
- http://www.securityfocus.com/bid/63791
- https://bugzilla.redhat.com/show_bug.cgi?id=1031678
- https://github.com/torvalds/linux/commit/7d3e91a89b7adbc2831334def9e494dd9892f9af