SB2021083010 - Denial of service in F5 BIG-IP APM OCSP
Published: August 30, 2021
Security Bulletin ID
SB2021083010
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) Memory leak (CVE-ID: CVE-2021-23047)
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 update from vendor's website.