#VU56157 Memory leak in BIG-IP APM - CVE-2021-23047
Published: August 30, 2021
Vulnerability identifier: #VU56157
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-23047
CWE-ID: CWE-401
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
BIG-IP APM
BIG-IP APM
Software vendor:
F5 Networks
F5 Networks
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due memory leak in the Online Certificate Status Protocol (OCSP) verification of a certificate that contains Authority Information Access (AIA). A remote attacker can send a specially crafted OCSP AIA request and cause a denial of service condition on the target system.
Remediation
Install updates from vendor's website.