SB2020121724 - Denial of service in zxfrd process in F5 BIG-IP
Published: December 17, 2020
Security Bulletin ID
SB2020121724
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) Memory leak (CVE-ID: CVE-2020-27725)
The vulnerability allows a remote user to perform DoS attack on the target system.
The vulnerability exists due memory leak in zxfrd process when listing DNS zones. A remote user with access to TMSH, iControl or SNMP can force the application to leak memory and perform denial of service attack.
This vulnerability affects only BIG-IP systems that are provisioned with BIG-IP DNS or BIG-IP GTM and at least one DNS zone.
Remediation
Install update from vendor's website.