Lucene search

K
cvelistGitHub_MCVELIST:CVE-2023-43656
HistorySep 27, 2023 - 8:38 p.m.

CVE-2023-43656 Sandbox escape for instances that have enabled transformation functions in matrix-hookshot

2023-09-2720:38:57
CWE-74
GitHub_M
www.cve.org
cve-2023-43656
matrix-hookshot
sandbox escape
transformation functions
github
gitlab
jira
vulnerability
vm2 sandbox
security upgrade

5.6 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

LOW

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L

9.2 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

39.3%

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.

CNA Affected

[
  {
    "vendor": "matrix-org",
    "product": "matrix-hookshot",
    "versions": [
      {
        "version": "< 4.5.0",
        "status": "affected"
      }
    ]
  }
]

5.6 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

LOW

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:L

9.2 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

39.3%

Related for CVELIST:CVE-2023-43656