First published: Wed Jul 03 2019(Updated: )
On BIG-IP (ASM) 14.1.0-14.1.0.5, 14.0.0-14.0.0.4, 13.0.0-13.1.1.4, and 12.1.0-12.1.4, Application logic abuse of ASM REST endpoints can lead to instability of BIG-IP system. Exploitation of this issue causes excessive memory consumption which results in the Linux kernel triggering OOM killer on arbitrary processes. The attack requires an authenticated user with role of "Guest" or greater privilege. Note: "No Access" cannot login so technically it's a role but a user with this access role cannot perform the attack.
Credit: f5sirt@f5.com
Affected Software | Affected Version | How to fix |
---|---|---|
F5 BIG-IP Application Security Manager | >=12.1.0<12.1.4.1 | |
F5 BIG-IP Application Security Manager | >=13.0.0<13.1.1.5 | |
F5 BIG-IP Application Security Manager | >=14.0.0<14.0.0.5 | |
F5 BIG-IP Application Security Manager | >=14.1.0<14.1.0.6 |
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CVE-2019-6637 is considered a high-severity vulnerability due to its potential to cause system instability through excessive memory consumption.
To mitigate CVE-2019-6637, you should upgrade your F5 BIG-IP Application Security Manager to the latest version that is not affected by this vulnerability.
CVE-2019-6637 affects BIG-IP (ASM) versions 14.1.0-14.1.0.5, 14.0.0-14.0.0.4, 13.0.0-13.1.1.4, and 12.1.0-12.1.4.
CVE-2019-6637 allows for application logic abuse of ASM REST endpoints which can lead to denial of service conditions.
There are no official workarounds for CVE-2019-6637; upgrading to a patched version is the recommended approach to mitigate the vulnerability.