Vulnerabilities > CVE-2023-28623 - Missing Authorization vulnerability in Zulip

CVSS 3.7 - LOW

Attack vector

NETWORK

Attack complexity

HIGH

Privileges required

NONE

Confidentiality impact

NONE

Integrity impact

LOW

Availability impact

NONE

network

high complexity

zulip

CWE-862

NVD

Published: 2023-05-19

Updated: 2024-11-21

Summary

Zulip is an open-source team collaboration tool with unique topic-based threading. In the event that 1: `ZulipLDAPAuthBackend` and an external authentication backend (any aside of `ZulipLDAPAuthBackend` and `EmailAuthBackend`) are the only ones enabled in `AUTHENTICATION_BACKENDS` in `/etc/zulip/settings.py` and 2: The organization permissions don't require invitations to join. An attacker can create a new account in the organization with an arbitrary email address in their control that's not in the organization's LDAP directory. The impact is limited to installations which have this specific combination of authentication backends as described above in addition to having `Invitations are required for joining this organization` organization permission disabled. This issue has been addressed in version 6.2. Users are advised to upgrade. Users unable to upgrade may enable the `Invitations are required for joining this organization` organization permission to prevent this issue.

Vulnerable Configurations

Part	Description	Count
Application	Zulip Zulip Zulip - Zulip Zulip 0.7.1 Zulip Zulip 1.0.11 Zulip Zulip 1.0.12 Zulip Zulip 1.0.13 Zulip Zulip 1.0.14 Zulip Zulip 1.0.15 Zulip Zulip 1.0.16 Zulip Zulip 1.0.17 Zulip Zulip 1.0.18 Zulip Zulip 1.0.19 Zulip Zulip 1.0.20 Zulip Zulip 1.0.21 Zulip Zulip 1.0.22 Zulip Zulip 1.0.24 Zulip Zulip 1.0.25 Zulip Zulip 1.0.26 Zulip Zulip 1.0.27 Zulip Zulip 1.0.29 Zulip Zulip 1.3.0 Zulip Zulip 1.3.1 Zulip Zulip 1.3.2 Zulip Zulip 1.3.3 Zulip Zulip 1.3.4 Zulip Zulip 1.3.5 Zulip Zulip 1.3.6 Zulip Zulip 1.3.7 Zulip Zulip 1.3.8 Zulip Zulip 1.3.9 Zulip Zulip 1.3.10 Zulip Zulip 1.3.11 Zulip Zulip 1.3.12 Zulip Zulip 1.3.13 Zulip Zulip 1.4.0 Zulip Zulip 1.4.1 Zulip Zulip 1.4.2 Zulip Zulip 1.4.3 Zulip Zulip 1.5.0 Zulip Zulip 1.5.1 Zulip Zulip 1.5.2 Zulip Zulip 1.6.0 Zulip Zulip 1.7.0 Zulip Zulip 1.7.1 Zulip Zulip 1.7.2 Zulip Zulip 1.8.0 Zulip Zulip 1.8.1 Zulip Zulip 1.9.0 Zulip Zulip 1.9.1 Zulip Zulip 1.9.2 Zulip Zulip 2.0.0 Zulip Zulip 2.0.1 Zulip Zulip 2.0.2 Zulip Zulip 2.0.3 Zulip Zulip 2.0.4 Zulip Zulip 2.0.5 Zulip Zulip 2.0.6 Zulip Zulip 2.0.7 Zulip Zulip 2.0.8 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 2.1.33 Zulip Zulip 2.2 Zulip Zulip 2.3.35 Zulip Zulip 2.7.39 Zulip Zulip 3.0 Zulip Zulip 3.0.40 Zulip Zulip 3.1 Zulip Zulip 3.1.41 Zulip Zulip 3.2 Zulip Zulip 3.2.42 Zulip Zulip 3.3 Zulip Zulip 3.3.43 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 5.0.46 Zulip Zulip 5.1 Zulip Zulip 5.2 Zulip Zulip 5.3 Zulip Zulip 5.4 Zulip Zulip 5.5 Zulip Zulip 5.6	142

Common Weakness Enumeration (CWE)

CWE-862 - Missing Authorization

Summary

Vulnerable Configurations

Common Weakness Enumeration (CWE)

References