SB2012021808 - Input validation error in Unbound
Published: February 18, 2012 Updated: August 11, 2020
Security Bulletin ID
SB2012021808
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-2012-1192)
The vulnerability allows a remote non-authenticated attacker to manipulate or delete data.
The resolver in Unbound before 1.4.11 overwrites cached server names and TTL values in NS records during the processing of a response to an A record query, which allows remote attackers to trigger continued resolvability of revoked domain names via a "ghost domain names" attack.
Remediation
Install update from vendor's website.