// For flags

CVE-2022-41914

Non-constant-time SCIM token comparison in Zulip Server

Severity Score

3.7
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Zulip is an open-source team collaboration tool. For organizations with System for Cross-domain Identity Management(SCIM) account management enabled, Zulip Server 5.0 through 5.6 checked the SCIM bearer token using a comparator that did not run in constant time. Therefore, it might theoretically be possible for an attacker to infer the value of the token by performing a sophisticated timing analysis on a large number of failing requests. If successful, this would allow the attacker to impersonate the SCIM client for its abilities to read and update user accounts in the Zulip organization. Organizations where SCIM account management has not been enabled are not affected.

Zulip es una herramienta de colaboración en equipo de código abierto. Para las organizaciones con System para Cross-domain Identity Management (SCIM) habilitada, Zulip Server 5.0 a 5.6 verificó el token de portador SCIM usando un comparador que no se ejecutaba en tiempo constante. Por lo tanto, en teoría, un atacante podría inferir el valor del token realizando un sofisticado análisis de tiempo en una gran cantidad de solicitudes fallidas. Si tiene éxito, esto permitiría al atacante hacerse pasar por el cliente SCIM por su capacidad para leer y actualizar cuentas de usuario en la organización Zulip. Las organizaciones donde no se ha habilitado la administración de cuentas SCIM no se ven afectadas.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
Attack Vector
Network
Attack Complexity
High
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2022-09-30 CVE Reserved
  • 2022-11-16 CVE Published
  • 2024-08-03 CVE Updated
  • 2025-03-30 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
  • CWE-203: Observable Discrepancy
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Zulip
Search vendor "Zulip"
 Zulip Server
Search vendor "Zulip" for product "Zulip Server"
 >= 5.0 < 5.7
Search vendor "Zulip" for product "Zulip Server" and version " >= 5.0 < 5.7"
-
Affected