Vulnerabilities > CVE-2021-43791 - Unspecified vulnerability in Zulip

CVSS 5.3 - MEDIUM

Attack vector

NETWORK

Attack complexity

LOW

Privileges required

NONE

Confidentiality impact

NONE

Integrity impact

LOW

Availability impact

NONE

network

low complexity

zulip

NVD

Published: 2021-12-02

Updated: 2024-11-21

Summary

Zulip is an open source group chat application that combines real-time chat with threaded conversations. In affected versions expiration dates on the confirmation objects associated with email invitations were not enforced properly in the new account registration flow. A confirmation link takes a user to the check_prereg_key_and_redirect endpoint, before getting redirected to POST to /accounts/register/. The problem was that validation was happening in the check_prereg_key_and_redirect part and not in /accounts/register/ - meaning that one could submit an expired confirmation key and be able to register. The issue is fixed in Zulip 4.8. There are no known workarounds and users are advised to upgrade as soon as possible.

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	127

Summary

Vulnerable Configurations

References