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CVE-2024-21630

Zulip non-admins can invite new users to streams they would not otherwise be able to add existing users to

Published: Jan 25, 2024Updated: Nov 21, 2024 Sources: CVE List NVDCWE-862
NVD MITRE
4.3CVSSMEDIUM
EPSS Score
0.4%
Top 71.6%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Zulip is an open-source team collaboration tool. A vulnerability in version 8.0 is similar to CVE-2023-32677, but applies to multi-use invitations, not single-use invitation links as in the prior CVE. Specifically, it applies when the installation has configured non-admins to be able to invite users and create multi-use invitations, and has also configured only admins to be able to invite users to streams. As in CVE-2023-32677, this does not let users invite new users to arbitrary streams, only to streams that the inviter can already see. Version 8.1 fixes this issue. As a workaround, administrators can limit sending of invitations down to users who also have the permission to add users to streams.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:LI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-862

Affected Products

zulipzulip
On-premWeb App
Enterprise Software / collaboration-groupware
zulip serverzulip
On-premWeb App
Enterprise Software / collaboration-groupware
zuliposs-projectEnterprise Softwareaka zulip

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Initial Access
View detailed technique mapping

References

https://github.com/zulip/zulip/security/advisories/GHSA-87p9-wprh-7rm6
github.com
https://github.com/zulip/zulip/security/advisories/GHSA-mrvp-96q6-jpvc
github.com
https://github.com/zulip/zulip/commit/0df7bd71f32f3b772e2646c6ab0d60c9b610addf
github.com
and 2 more references View all →

Timeline

Published
Jan 25, 2024
Last Updated
Nov 21, 2024

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