BIG-IP AFM: Improper Handling of Exceptional Conditions
CVE-2022-23018 is a high-severity improper handling of exceptional conditions vulnerability in BIG-IP AFM, with a CVSS 3.1 base score of 7.5 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. There is no confirmed exploitation so far. EPSS estimates a 0.92% chance of exploitation within 30 days, higher than 61% of scored CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update Big-ip Advanced Firewall Manager to 13.1.4.1 or 14.1.4.5 or 15.1.4.1 or 16.1.2, whichever matches your release line, or a later version.
- Read the advisory on support.f5.com for workarounds and exact fixed builds.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| BIG-IP AFM | BIG-IP AFM | Not specified in the record | Not stated |
| F5 | Big-ip Advanced Firewall Manager | 13.1.3.4 up to, but not including, 13.1.4.1; 14.1.0 up to, but not including, 14.1.4.5; 15.1.0 up to, but not including, 15.1.4.1; 16.1.0 up to, but not including, 16.1.2 | 13.1.4.1, 14.1.4.5, 15.1.4.1, 16.1.2 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- NoneNo data is disclosed.
- Integrity
- NoneNothing can be modified.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 7.5 | High | NVD |
| CVSS 2.0 | 7.1 | High | NVD |
Official description
On BIG-IP AFM version 16.1.x before 16.1.2, 15.1.x before 15.1.4.1, 14.1.x before 14.1.4.5, and 13.1.x beginning in 13.1.3.4, when a virtual server is configured with both HTTP protocol security and HTTP Proxy Connect profiles, undisclosed requests can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Handling of Exceptional Conditions
The product does not handle or incorrectly handles an exceptional condition.
More Improper Handling of Exceptional Conditions vulnerabilities (CWE-755)
Timeline
- CVE record published.
- Record last changed materially (score, affected products, status or references).
References
Advisories
Other vulnerabilities in BIG-IP AFM
- 7.5 High severity
Recent Improper Handling of Exceptional Conditions vulnerabilities
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
- 8.8 High severity
Google Chromium V8 Memory Corruption Exploited
- 8.6 High severity
- 9.8 Critical severity
Apache Struts Remote Code Execution Exploited
Spotted an error? Tell us.