SB2014021504 - Input validation error in netfilter iptables
Published: February 15, 2014 Updated: August 10, 2020
Security Bulletin ID
SB2014021504
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Input validation error (CVE-ID: CVE-2012-2663)
The vulnerability allows a remote non-authenticated attacker to read and manipulate data.
extensions/libxt_tcp.c in iptables through 1.4.21 does not match TCP SYN+FIN packets in --syn rules, which might allow remote attackers to bypass intended firewall restrictions via crafted packets. NOTE: the CVE-2012-6638 fix makes this issue less relevant.
Remediation
Install update from vendor's website.