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GitHub_MCVELIST:CVE-2023-38690

HistoryAug 04, 2023 - 4:31 p.m.

CVE-2023-38690 matrix-appservice-irc IRC command injection via admin commands containing newlines

2023-08-0416:31:41

CWE-20

CWE-77

GitHub_M

www.cve.org

cve-2023

matrix-appservice-irc

irc command injection

admin commands

newlines

node.js

bridge

matrix

parsing

channel name

patched

dynamic channels

config

bug

execution method

CVSS3

5.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

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

AI Score

9.9

Confidence

High

EPSS

0.002

Percentile

52.7%

JSON

matrix-appservice-irc is a Node.js IRC bridge for Matrix. Prior to version 1.0.1, it is possible to craft a command with newlines which would not be properly parsed. This would mean you could pass a string of commands as a channel name, which would then be run by the IRC bridge bot. Versions 1.0.1 and above are patched. There are no robust workarounds to the bug. One may disable dynamic channels in the config to disable the most common execution method but others may exist.

CNA Affected

[
  {
    "vendor": "matrix-org",
    "product": "matrix-appservice-irc",
    "versions": [
      {
        "version": "< 1.0.1",
        "status": "affected"
      }
    ]
  }
]

References

github.com/matrix-org/matrix-appservice-irc/commit/0afb064635d37e039067b5b3d6423448b93026d3

github.com/matrix-org/matrix-appservice-irc/releases/tag/1.0.1

github.com/matrix-org/matrix-appservice-irc/security/advisories/GHSA-3pmj-jqqp-2mj3

CVSS3

5.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

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

AI Score

9.9

Confidence

High

EPSS

0.002

Percentile

52.7%

JSON

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