Vulnerability in Zulip Server Affects User Account Security
CVE-2019-18933

9.8CRITICAL

Key Information:

Vendor

Zulip

Status
Zulip Server
Vendor
CVE Published:
21 November 2019

What is CVE-2019-18933?

A security vulnerability in Zulip Server versions from 1.7.0 to just before 2.0.7 was identified, affecting organizations that enabled both social authentication (like GitHub and Google SSO) and traditional password authentication. This flaw allowed unprivileged attackers to potentially steal users' personal API keys during the signup process, granting unauthorized access to nearly all aspects of a user's account. Users who registered through social methods faced increased risks if their organization permitted password logins.

References

https://blog.zulip.org/2019/11/21/zulip-2-0-7-security-re...
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https://github.com/zulip/zulip/commit/0c2cc41d2e40807baa5...
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CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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