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CVE-2023-43656

Sandbox escape for instances that have enabled transformation functions in matrix-hookshot

Published: Sep 27, 2023Updated: Nov 21, 2024 Sources: CVE List NVDCWE-74
5.6MEDIUM
NVD MITRE
EPSS Score
0.3%
Top 79.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:LAC:HPR:NUI:NS:CC:LI:LA:L
Exploitability
AV:LAttack Vector
Local
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:LAvailability
Low
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Weaknesses

CWE-74NVD-CWE-noinfo

Affected Products

matrix-org
oss-project·DEaka matrix-js-sdk, synapse, matrix appservice irc
matrix-hookshotOn-prem
Communications / messaging-chat
matrix
oss-project·GBaka matrix irc bridge, javascript sdk, synapse
hookshotOn-prem
Communications / messaging-chat

Exploitability

Official Patch Available

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

https://github.com/matrix-org/matrix-hookshot/security/advisories/GHSA-fr97-pv6w-4cj6
github.com
https://github.com/matrix-org/matrix-hookshot/commit/dc126afa6af86d66aefcd23a825326f405bcc894
github.com

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