F5-K000139430: Use After Free
First published: Tue Apr 30 2024(Updated: )
A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. The nft_verdict_init() function allows positive values as drop error within the hook verdict, and hence the nf_hook_slow() function can cause a double free vulnerability when NF_DROP is issued with a drop error which resembles NF_ACCEPT. We recommend upgrading past commit f342de4e2f33e0e39165d8639387aa6c19dff660.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| F5 F5OS | =1.7.0>=1.5.0<=1.5.2 | 1.8.0 |
| F5 F5OS | >=1.6.0<=1.6.2>=1.5.0<=1.5.1 | 1.8.0 |
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Reference Links
Frequently Asked Questions
What is the severity of F5-K000139430?
The severity of F5-K000139430 is critical due to its potential for local privilege escalation.
How do I fix F5-K000139430?
To fix F5-K000139430, update to F5OS-A version 1.8.0 or F5OS-C version 1.8.0.
What systems are affected by F5-K000139430?
F5-K000139430 affects specific versions of F5OS-A and F5OS-C running earlier than the required remedy versions.
What is the nature of the vulnerability in F5-K000139430?
F5-K000139430 is a use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component.
Can F5-K000139430 lead to remote exploitation?
F5-K000139430 is a local privilege escalation vulnerability and does not lead to remote exploitation.
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