#VU60898 Improper access control in Zulip Server - CVE-2021-3967
Published: February 28, 2022
Vulnerability identifier: #VU60898
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/U:Green
CVE-ID: CVE-2021-3967
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Zulip Server
Zulip Server
Software vendor:
Zulip
Zulip
Description
The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper access restrictions. A remote user who gets the user's valid session can call vulnerable API to extract the api_key value without user's password.
Remediation
Install updates from vendor's website.