Vulnerability Details : CVE-2022-39202

matrix-appservice-irc is an open source Node.js IRC bridge for Matrix. The Internet Relay Chat (IRC) protocol allows you to specify multiple modes in a single mode command. Due to a bug in the underlying matrix-org/node-irc library, affected versions of matrix-appservice-irc perform parsing of such modes incorrectly, potentially resulting in the wrong user being given permissions. Mode commands can only be executed by privileged users, so this can only be abused if an operator is tricked into running the command on behalf of an attacker. The vulnerability has been patched in matrix-appservice-irc 0.35.0. As a workaround users should refrain from entering mode commands suggested by untrusted users. Avoid using multiple modes in a single command.
Published 2022-09-13 18:15:15
Updated 2022-09-16 17:42:59
Source GitHub, Inc.
View at NVD,   CVE.org

Products affected by CVE-2022-39202

Exploit prediction scoring system (EPSS) score for CVE-2022-39202

EPSS FAQ
0.10%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 43 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2022-39202

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
6.3
 MEDIUM CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
2.8
3.4
 NIST
4.3
 MEDIUM CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:L
0.9
3.4
 GitHub, Inc.

CWE ids for CVE-2022-39202

  • The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.
    Assigned by:
    • nvd@nist.gov (Primary)
    • security-advisories@github.com (Secondary)

References for CVE-2022-39202

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