F5 BIG-IP ASM memory leak via undisclosed requests
CVE-2024-21789 Published on February 14, 2024
BIG-IP ASM and Advanced WAF vulnerability
When a BIG-IP ASM/Advanced WAF security policy is configured on a virtual server, undisclosed requests can cause an increase in memory resource utilization.
Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated
Vulnerability Analysis
CVE-2024-21789 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.
Weakness Type
Missing Release of Resource after Effective Lifetime
The software does not release a resource after its effective lifetime has ended, i.e., after the resource is no longer needed. When a resource is not released after use, it can allow attackers to cause a denial of service by causing the allocation of resources without triggering their release. Frequently-affected resources include memory, CPU, disk space, power or battery, etc.
Products Associated with CVE-2024-21789
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Affected Versions
F5 BIG-IP:- Version 17.1.0 and below 17.1.1 is affected.
- Version 16.1.0 and below * is unaffected.
- Version 15.1.0 and below * is unaffected.
- Version 17.1.0 and below 17.1.1 is affected.
- Version 16.1.0, <= * is affected.
- Version 15.1.0, <= * is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.