SB2013042219 - Information disclosure in Linux kernel
Published: April 22, 2013 Updated: August 11, 2020
Security Bulletin ID
SB2013042219
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Information disclosure (CVE-ID: CVE-2013-3076)
The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.
The crypto API in the Linux kernel through 3.9-rc8 does not initialize certain length variables, which allows local users to obtain sensitive information from kernel stack memory via a crafted recvmsg or recvfrom system call, related to the hash_recvmsg function in crypto/algif_hash.c and the skcipher_recvmsg function in crypto/algif_skcipher.c.
Remediation
Install update from vendor's website.
References
- http://lists.fedoraproject.org/pipermail/package-announce/2013-April/103750.html
- http://lists.fedoraproject.org/pipermail/package-announce/2013-May/104480.html
- http://lists.opensuse.org/opensuse-security-announce/2013-07/msg00016.html
- http://lists.opensuse.org/opensuse-security-announce/2013-07/msg00018.html
- http://www.openwall.com/lists/oss-security/2013/04/14/3
- http://www.ubuntu.com/usn/USN-1837-1
- https://github.com/torvalds/linux/commit/72a763d805a48ac8c0bf48fdb510e84c12de51fe