GHSA-p5wf-cmr4-xrwr Permissive Regular Expression in tacquito
A permissive regex in tacquito allows unauthorized command execution on network devices by bypassing intended command authorization checks.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is GHSA-p5wf-cmr4-xrwr?
GHSA-p5wf-cmr4-xrwr is a vulnerability in github.com/facebookincubator/tacquito, published on 18 Oct 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Impact
The CVE is for a software vulnerability. Network admins who have deployed tacquito (or versions of tacquito) in their production environments and use tacquito to perform command authorization for network devices should be impacted.
Tacquito code prior to commit 07b49d1358e6ec0b5aa482fcd284f509191119e2 was performing regex matches on authorized commands and arguments in a more permissive than intended manner. Configured allowed commands/arguments were intended to require a match on the entire string, but instead only enforced a match on a sub-string. This behaviour could potentially allowed unauthorized commands to be executed.
Patches
The problem has been patched, and users should update to the latest github repo commit to get the patch.
Workarounds
Users should be able to add boundary conditions anchors '^' and '$' to their command configs to remediate the vulnerability without the upgrade
Which versions are affected by GHSA-p5wf-cmr4-xrwr?
3 open source packages ship an affected version, including github.com/facebookincubator/tacquito.
| Package | Affected | Fixed in |
|---|---|---|
github.com/facebookincubator/tacquito Go | All versions | 0.0.0-20241011192817-07b49d1358e6 |
github.com/facebookincubator/tacquito Go | All versions | 0.0.0-20241011192817-07b49d1358e6 |
github.com/facebookincubator/tacquito Go | All versions | 0.0.0-20241011192817-07b49d1358e6 |
How do I fix GHSA-p5wf-cmr4-xrwr?
Upgrade github.com/facebookincubator/tacquito to 0.0.0-20241011192817-07b49d1358e6 or later.
Is GHSA-p5wf-cmr4-xrwr being exploited?
There is no known exploitation of GHSA-p5wf-cmr4-xrwr in the wild and no public exploit code.
Sources
Also known as GO-2024-3207.