Date: Tue, 25 May 2021 21:32:35 +0800 From: PengHui Li <penghui@...che.org> To: oss-security@...ts.openwall.com Subject: CVE-2021-22160 Apache Pulsar Information Disclosure CVE-2021-22160 Apache Pulsar Information Disclosure Severity: High Versions Affected: Apache Pulsar < 2.7.1 Description: If Apache Pulsar is configured to authenticate clients using tokens based on JSON Web Tokens (JWT), the signature of the token is not validated if the algorithm of the presented token is set to "none". This allows an attacker to connect to Pulsar instances as any user (incl. admins). Mitigation: Users of the affected versions should apply one of the following mitigations: Upgrade to Apache Pulsar 2.7.1 or later Credit: This issue was identified by Peter Stöckli
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