// For flags

CVE-2022-39202

IRC mode parameter confusion in matrix-appservice-irc

Severity Score

6.3
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

matrix-appservice-irc es un puente IRC de código abierto Node.js para Matrix. El protocolo Internet Relay Chat (IRC) permite especificar múltiples modos en un solo comando de modo. Debido a un error en la biblioteca matrix-org/node-irc subyacente, las versiones afectadas de matrix-appservice-irc llevan a cabo el análisis de dichos modos de forma incorrecta, resultando potencialmente en que sean dados permisos al usuario equivocado. Los comandos de modo sólo pueden ser ejecutados por usuarios privilegiados, por lo que esto sólo puede ser abusado si un operador es engañado para ejecutar el comando en nombre de un atacante. La vulnerabilidad ha sido parcheada en matrix-appservice-irc versión 0.35.0. Como mitigación, los usuarios deben abstenerse de introducir comandos de modo sugeridos por usuarios no confiables. Evite usar varios modos en un solo comando

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2022-09-02 CVE Reserved
  • 2022-09-13 CVE Published
  • 2024-04-05 EPSS Updated
  • 2024-08-03 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-269: Improper Privilege Management
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Matrix
Search vendor "Matrix"
 Matrix Irc Bridge
Search vendor "Matrix" for product "Matrix Irc Bridge"
 < 0.35.0
Search vendor "Matrix" for product "Matrix Irc Bridge" and version " < 0.35.0"
node.js
Affected