SB2013060701 - Format string error in Linux kernel
Published: June 7, 2013 Updated: August 11, 2020
Security Bulletin ID
SB2013060701
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Format string error (CVE-ID: CVE-2013-2851)
CWE-ID: CWE-134 - Use of Externally-Controlled Format String
CVSSv4: 7.1 [CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local #AU# to execute arbitrary code.
Format string vulnerability in the register_disk function in block/genhd.c in the Linux kernel through 3.9.4 allows local users to gain privileges by leveraging root access and writing format string specifiers to /sys/module/md_mod/parameters/new_array in order to create a crafted /dev/md device name.
Remediation
Install update from vendor's website.
References
- http://lists.opensuse.org/opensuse-security-announce/2013-09/msg00003.html
- http://lists.opensuse.org/opensuse-security-announce/2013-09/msg00004.html
- http://lists.opensuse.org/opensuse-updates/2013-12/msg00129.html
- http://marc.info/?l=linux-kernel&m=137055204522556&w=2
- http://rhn.redhat.com/errata/RHSA-2013-1645.html
- http://rhn.redhat.com/errata/RHSA-2013-1783.html
- http://rhn.redhat.com/errata/RHSA-2014-0284.html
- http://www.debian.org/security/2013/dsa-2766
- http://www.openwall.com/lists/oss-security/2013/06/06/13
- http://www.ubuntu.com/usn/USN-1912-1
- http://www.ubuntu.com/usn/USN-1913-1
- http://www.ubuntu.com/usn/USN-1941-1
- http://www.ubuntu.com/usn/USN-1942-1
- https://bugzilla.redhat.com/show_bug.cgi?id=969515