CVE-2017-0910 : What You Need to Know

In versions prior to 1.7.1 of Zulip Server, a security flaw allowed unauthorized user account creation across different realms.

Understanding CVE-2017-0910

In Zulip Server before 1.7.1, a vulnerability in the invitation system enabled users to create accounts in any realm on the server.

What is CVE-2017-0910?

The CVE-2017-0910 vulnerability in Zulip Server allowed users authorized in one realm to create accounts in other realms on the server.

The Impact of CVE-2017-0910

Unauthorized user account creation in different server realms

Technical Details of CVE-2017-0910

Zulip Server before version 1.7.1 had a security flaw in the invitation system.

Vulnerability Description

Incorrect authorization vulnerability (CWE-863)

Affected Systems and Versions

Product: Zulip Server
Vendor: Zulip
Versions Affected: Before 1.7.1

Exploitation Mechanism

Authorized users in one realm could create user accounts in any other realm on the server.

Mitigation and Prevention

Immediate Steps to Take:

Upgrade Zulip Server to version 1.7.1 or later
Monitor user account creation activities Long-Term Security Practices:
Regularly review and update authorization mechanisms
Conduct security audits to identify similar vulnerabilities Patching and Updates:
Apply patches provided by Zulip to fix the vulnerability