CVE-2021-23047
First published: Tue Sep 14 2021(Updated: )
On version 16.x before 16.1.0, 15.1.x before 15.1.3.1, 14.1.x before 14.1.4.3, and all versions of 13.1.x, 12.1.x and 11.6.x, when BIG-IP APM performs Online Certificate Status Protocol (OCSP) verification of a certificate that contains Authority Information Access (AIA), undisclosed requests may cause an increase in memory use. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Credit: f5sirt@f5.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| F5 Access Policy Manager | >=11.6.1<=11.6.5 | |
| F5 Access Policy Manager | >=12.1.0<=12.1.6 | |
| F5 Access Policy Manager | >=13.1.0<13.1.4 | |
| F5 Access Policy Manager | >=14.1.0<14.1.4.3 | |
| F5 Access Policy Manager | >=15.1.0<15.1.3.1 | |
| F5 Access Policy Manager | >=16.0.0<=16.0.1 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2021-23047?
CVE-2021-23047 has a high severity rating due to the potential for unauthorized requests during OCSP verification.
How do I fix CVE-2021-23047?
To fix CVE-2021-23047, upgrade your F5 Big-IP Access Policy Manager to the latest patched version available.
Which versions are affected by CVE-2021-23047?
CVE-2021-23047 affects multiple versions including 16.x before 16.1.0, and includes 15.1.x, 14.1.x, and earlier versions of F5 Big-IP APM.
What is Online Certificate Status Protocol (OCSP)?
Online Certificate Status Protocol (OCSP) is a protocol used to obtain the revocation status of an X.509 digital certificate.
Is CVE-2021-23047 a network vulnerability?
Yes, CVE-2021-23047 is considered a network vulnerability as it can be exploited through OCSP verification errors.
- agent/severity
- agent/references
- agent/weakness
- agent/author
- agent/tags
- agent/type
- agent/description
- agent/event
- agent/first-publish-date
- agent/softwarecombine
- agent/last-modified-date
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/f5
- canonical/f5 access policy manager
- version/f5 access policy manager/11.6.1
- version/f5 access policy manager/11.6.5
- version/f5 access policy manager/12.1.0
- version/f5 access policy manager/12.1.6
- version/f5 access policy manager/13.1.0
- version/f5 access policy manager/14.1.0
- version/f5 access policy manager/15.1.0
- version/f5 access policy manager/16.0.0
- version/f5 access policy manager/16.0.1