SB2017021001 - Remote DoS in ISC BIND
Published: February 10, 2017
Security Bulletin ID
SB2017021001
Severity
Low
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) NULL pointer dereference (CVE-ID: CVE-2017-3135)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference error when parsing DNS queries, if ISC BIND is configured with Response Policy Zones (RPZ) and DNS64 to rewrite query responses. A remote unauthenticated attacker can send specially crafted DNS queries, trigger NULL pointer dereference and cause denial of service.
Successful exploitation of the vulnerability will result in DoS attack against affected daemon.
Remediation
Install update from vendor's website.