Improper Privilege Management in Zulip Server - CVE-2024-21630
Published: February 8, 2024
Vulnerability identifier: #VU86274
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2024-21630
CWE-ID: CWE-269
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to bypass implemented security restrictions.
The vulnerability exists due to improper privilege management when handling multi-use invitations. A remote user can bypass security restrictions and invite users to stream they should not be able to access otherwise.
Affected software
Zulip Server
How to mitigate CVE-2024-21630
Install updates from vendor's website.
Zulip Server - update to 8.1
External References
- https://github.com/zulip/zulip/security/advisories/GHSA-87p9-wprh-7rm6
- https://github.com/zulip/zulip/security/advisories/GHSA-mrvp-96q6-jpvc
- https://github.com/zulip/zulip/commit/0df7bd71f32f3b772e2646c6ab0d60c9b610addf
- https://zulip.com/help/configure-who-can-invite-to-streams
- https://zulip.com/help/restrict-account-creation#change-who-can-send-invitations