CVE-2019-18933: Critical severity zulip server vulnerability
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.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is CVE-2019-18933?
CVE-2019-18933 is a vulnerability in Zulip Server versions from 1.7.0 to before 2.0.7.
What is the severity of CVE-2019-18933?
CVE-2019-18933 has a severity rating of 9.8, which is considered critical.
How does CVE-2019-18933 impact Zulip Server?
CVE-2019-18933 allows users who registered their account using social authentication to have their personal API key stolen if their organization allows password authentication as well.
How can I fix CVE-2019-18933?
To fix CVE-2019-18933, upgrade your Zulip Server installation to version 2.0.7 or later.
Where can I find more information about CVE-2019-18933?
You can find more information about CVE-2019-18933 in the Zulip blog post and GitHub commit referenced in the vulnerability description.