CVE-2019-18933 Information

Description

In Zulip Server versions from 1.7.0 to before 2.0.7 a bug in the new user signup process meant that users who registered their account using social authentication (e.g. GitHub or Google SSO) in an organization that also allows password authentication could have their personal API key stolen by an unprivileged attacker allowing nearly full access to the user’s account.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

https://blog.zulip.org/2019/11/21/zulip-2-0-7-security-release/ https://github.com/zulip/zulip/commit/0c2cc41d2e40807baa5ee2c72987ebfb64ea2eb6

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8