Vulnerability identifier: #VU76394
Vulnerability risk: Low
CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-269
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Zulip Server
Web applications /
Other software
Vendor: Zulip
Description
The vulnerability allows a remote user to bypass implemented security restrictions.
The vulnerability exists due to improper privilege management when sending invitations. A remote user can add other users to streams when they are not authorized to do so.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Zulip Server: 1.9.0 - 6.1
External links
http://github.com/zulip/zulip/commit/7c2693a2c64904d1d0af8503b57763943648cbe5
http://zulip.com/help/restrict-account-creation#change-who-can-send-invitations
http://github.com/zulip/zulip/security/advisories/GHSA-mrvp-96q6-jpvc
http://github.com/zulip/zulip/releases/tag/6.2
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.