SB2014052803 - Input validation error in Samba
Published: May 28, 2014 Updated: August 10, 2020
Security Bulletin ID
SB2014052803
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Input validation error (CVE-ID: CVE-2014-0239)
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
The internal DNS server in Samba 4.x before 4.0.18 does not check the QR field in the header section of an incoming DNS message before sending a response, which allows remote attackers to cause a denial of service (CPU and bandwidth consumption) via a forged response packet that triggers a communication loop, a related issue to CVE-1999-0103.
Remediation
Install update from vendor's website.