Access Control Flaw in Zulip Affects Deactivated Users
CVE-2016-4427

7.5HIGH

Key Information:

Vendor

Zulip

Status
Zulip
Vendor
CVE Published:
28 July 2022

What is CVE-2016-4427?

An access control vulnerability in Zulip prior to version 1.3.12 allows deactivated users to access private messages when Single Sign-On (SSO) is enabled. This flaw undermines the integrity of user deactivation, posing potential risks to sensitive information. Organizations using Zulip should update to the latest version to mitigate this vulnerability and ensure that deactivated accounts do not retain access to confidential communication.

Affected Version(s)

zulip zulip 1.3.12

References

https://zulip.readthedocs.io/en/2.1.7/overview/changelog....
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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CVE-2016-4427 : Access Control Flaw in Zulip Affects Deactivated Users