#VU49068 Memory leak in F5 Networks products - CVE-2020-27725
Published: December 17, 2020
Vulnerability identifier: #VU49068
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2020-27725
CWE-ID: CWE-401
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
BIG-IP DNS
BIG-IP Link Controller
BIG-IP GTM
BIG-IP DNS
BIG-IP Link Controller
BIG-IP GTM
Software vendor:
F5 Networks
F5 Networks
Description
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 updates from vendor's website.