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…
Does this matter?
Lower severity and a low EPSS score (1.10%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.0
- 4.3 MEDIUMCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
- EPSS
- 1.10% probability · 64th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-200, CWE-863
- Affected
- zulip/zulip server
- Source
- support@hackerone.com
References
- http://www.securityfocus.com/bid/97159Third Party Advisory, Vendor Advisory
- https://github.com/zulip/zulip/commit/7ecda1ac8e26d8fb3725e954b2dc4723dda2255fPatch, Third Party Advisory
- https://groups.google.com/d/msg/zulip-announce/VyawgRuoY34/NTBwnTArGwAJPatch, Release Notes, Third Party Advisory
- http://www.securityfocus.com/bid/97159Third Party Advisory, Vendor Advisory
- https://github.com/zulip/zulip/commit/7ecda1ac8e26d8fb3725e954b2dc4723dda2255fPatch, Third Party Advisory
- https://groups.google.com/d/msg/zulip-announce/VyawgRuoY34/NTBwnTArGwAJPatch, Release Notes, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.