CVE-2017-0881

An error in the implementation of an autosubscribe feature in the check_stream_exists route of the Zulip group chat application server before 1.4.3 allowed an authenticated user to subscribe to a private stream that should have required an invitation from an existing member to join. The issue affects all previously released versions of the Zulip server.

Score

CVSS 3.0 4.3 Medium

Status

Modified - support@hackerone.com

Published

2017-03-28

Last modified

2024-08-05

Weaknesses

CWE-200, CWE-863

Affected products

• Zulip Server (Zulip)

References

• http://www.securityfocus.com/bid/97159
• https://github.com/zulip/zulip/commit/7ecda1ac8e26d8fb3725e954b2dc4723dda2255f
• https://groups.google.com/d/msg/zulip-announce/VyawgRuoY34/NTBwnTArGwAJ