Vulnerability · Published Oct 10, 2023 · Assigned by f5
CVE-2023-40534BIG-IP HTTP/2 vulnerability
High 7.5
In plain English
A high-severity memory leak in BIG-IP from F5. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 51% of all known vulnerabilities).
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.7%top 48.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
When a client-side HTTP/2 profile and the HTTP MRF Router option are enabled for a virtual server, and an iRule using the HTTP_REQUEST event or Local Traffic Policy are associated with the virtual server, undisclosed requests can cause TMM to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| F5 | BIG-IP | 17.1.0 – before 17.1.0.3.0.23.4-ENG16.1.0 – before 16.1.4.1.0.13.5-ENG |
| F5 | BIG-IP Next SPK | 1.6.0 – before * |
Weakness: CWE-401 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://my.f5.com/manage/s/article/K000133467 vendor-advisory