Vulnerabilities > CVE-2022-31017 - Always-Incorrect Control Flow Implementation vulnerability in Zulip

CVSS 2.1 - LOW

Attack vector

NETWORK

Attack complexity

HIGH

Privileges required

SINGLE

Confidentiality impact

PARTIAL

Integrity impact

NONE

Availability impact

NONE

network

high complexity

zulip

CWE-670

NVD

Published: 2022-06-25

Updated: 2022-07-07

Summary

Zulip is an open-source team collaboration tool. Versions 2.1.0 through and including 5.2 are vulnerable to a logic error. A stream configured as private with protected history, where new subscribers should not be allowed to see messages sent before they were subscribed, when edited causes the server to incorrectly send an API event that includes the edited message to all of the stream’s current subscribers. This API event is ignored by official clients, but can be observed by using a modified client or the browser’s developer tools. This bug will be fixed in Zulip Server 5.3. There are no known workarounds.

Vulnerable Configurations

Part	Description	Count
Application	Zulip Zulip Zulip 2.1.0 Zulip Zulip 2.1.1 Zulip Zulip 2.1.2 Zulip Zulip 2.1.3 Zulip Zulip 2.1.4 Zulip Zulip 2.1.5 Zulip Zulip 2.1.6 Zulip Zulip 2.1.7 Zulip Zulip 2.1.8 Zulip Zulip 2.2 Zulip Zulip 3.0 Zulip Zulip 3.1 Zulip Zulip 3.2 Zulip Zulip 3.3 Zulip Zulip 3.4 Zulip Zulip 4.0 Zulip Zulip 4.1 Zulip Zulip 4.2 Zulip Zulip 4.3 Zulip Zulip 4.4 Zulip Zulip 4.5 Zulip Zulip 4.6 Zulip Zulip 4.7 Zulip Zulip 4.8 Zulip Zulip 4.9 Zulip Zulip 4.10 Zulip Zulip 4.11 Zulip Zulip 5.0 Zulip Zulip 5.1 Zulip Zulip 5.2	39

Common Weakness Enumeration (CWE)

CWE-670 - Always-Incorrect Control Flow Implementation

References

https://github.com/zulip/zulip/security/advisories/GHSA-m5j3-jp59-6f3q