Vulnerability Description
matrix-hookshot is a Matrix bot for connecting to external services like GitHub, GitLab, JIRA, and more. Instances that have enabled transformation functions (those that have `generic.allowJsTransformationFunctions` in their config), may be vulnerable to an attack where it is possible to break out of the `vm2` sandbox and as a result Hookshot will be vulnerable to this. This problem is only likely to affect users who have allowed untrusted users to apply their own transformation functions. If you have only enabled a limited set of trusted users, this threat is reduced (though not eliminated). Version 4.5.0 and above of hookshot include a new sandbox library which should better protect users. Users are advised to upgrade. Users unable to upgrade should disable `generic.allowJsTransformationFunctions` in the config.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Matrix | Hookshot | < 4.5.0 |
Related Weaknesses (CWE)
References
- https://github.com/matrix-org/matrix-hookshot/commit/dc126afa6af86d66aefcd23a825Patch
- https://github.com/matrix-org/matrix-hookshot/security/advisories/GHSA-fr97-pv6wVendor Advisory
- https://github.com/matrix-org/matrix-hookshot/commit/dc126afa6af86d66aefcd23a825Patch
- https://github.com/matrix-org/matrix-hookshot/security/advisories/GHSA-fr97-pv6wVendor Advisory
FAQ
What is CVE-2023-43656?
CVE-2023-43656 is a vulnerability with a CVSS score of 5.6 (MEDIUM). matrix-hookshot is a Matrix bot for connecting to external services like GitHub, GitLab, JIRA, and more. Instances that have enabled transformation functions (those that have `generic.allowJsTransform...
How severe is CVE-2023-43656?
CVE-2023-43656 has been rated MEDIUM with a CVSS base score of 5.6/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-43656?
Check the references section above for vendor advisories and patch information. Affected products include: Matrix Hookshot.