vulnwire
4.3med

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 befo…

Published 9 y ago · modified 4 mo ago · JSON

CVSS
4.3
v3.0 · NVD
CISA KEV
No
not known exploited
EPSS
1.1%
percentile 66%
Public exploits
0
none known

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.

Exploit prediction (EPSS)

1.10% probability of exploitation in the next 30 days, higher than 66% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD3.04.3CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
NVD2.04.0AV:N/AC:L/Au:S/C:P/I:N/A:N

Affected products

  • n/a Zulip Server Versions 1.4.2 and below

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
  • CWE-863 Incorrect Authorization

References

  • securityfocus.com /bid/97159 · vdb-entry, x_refsource_BID, x_transferred
  • groups.google.com /d/msg/zulip-announce/VyawgRuoY34/NTBwnTArGwAJ · x_refsource_MISC, x_transferred
  • github.com /zulip/zulip/commit/7ecda1ac8e26d8fb3725e954b2dc4723dda2255f · x_refsource_MISC, x_transferred

Sources

vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.