Vulnerabilities > CVE-2017-0881 - Incorrect Authorization vulnerability in Zulip Server

CVSS 4.0 - MEDIUM

Attack vector

NETWORK

Attack complexity

LOW

Privileges required

SINGLE

Confidentiality impact

PARTIAL

Integrity impact

NONE

Availability impact

NONE

network

low complexity

zulip

CWE-863

NVD

Published: 2017-03-28

Updated: 2019-10-09

Summary

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.

Vulnerable Configurations

Part	Description	Count
Application	Zulip Zulip Zulip Server 1.1.5 Zulip Zulip Server 1.2.0 Zulip Zulip Server 1.2.1 Zulip Zulip Server 1.3.0 Zulip Zulip Server 1.3.1 Zulip Zulip Server 1.3.2 Zulip Zulip Server 1.3.3 Zulip Zulip Server 1.3.4 Zulip Zulip Server 1.3.5 Zulip Zulip Server 1.3.6 Zulip Zulip Server 1.3.7 Zulip Zulip Server 1.3.8 Zulip Zulip Server 1.3.9 Zulip Zulip Server 1.3.10 Zulip Zulip Server 1.3.11 Zulip Zulip Server 1.3.12 Zulip Zulip Server 1.3.13 Zulip Zulip Server 1.4.0 Zulip Zulip Server 1.4.1 Zulip Zulip Server 1.4.2	21

Common Weakness Enumeration (CWE)

CWE-863 - Incorrect Authorization

Summary

Vulnerable Configurations

Common Weakness Enumeration (CWE)

References