SB2013032209 - Input validation error in Linux kernel
Published: March 22, 2013 Updated: August 11, 2020
Security Bulletin ID
SB2013032209
Severity
High
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) Input validation error (CVE-ID: CVE-2013-1828)
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
The sctp_getsockopt_assoc_stats function in net/sctp/socket.c in the Linux kernel before 3.8.4 does not validate a size value before proceeding to a copy_from_user operation, which allows local users to gain privileges via a crafted application that contains an SCTP_GET_ASSOC_STATS getsockopt system call.
Remediation
Install update from vendor's website.
References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=726bc6b092da4c093eb74d13c07184b18c1af0f1
- http://grsecurity.net/~spender/sctp.c
- http://twitter.com/grsecurity/statuses/309805924749541376
- http://www.exploit-db.com/exploits/24747
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.8.4
- http://www.openwall.com/lists/oss-security/2013/03/08/2
- https://bugzilla.redhat.com/show_bug.cgi?id=919315
- https://github.com/torvalds/linux/commit/726bc6b092da4c093eb74d13c07184b18c1af0f1