Date: Tue, 27 Nov 2018 09:49:16 +0900 From: Akira Ajisaka <aajisaka@...che.org> To: general@...oop.apache.org, user@...oop.apache.org, security@...oop.apache.org, oss-security@...ts.openwall.com Subject: CVE-2018-11766: Apache Hadoop privilege escalation vulnerability CVE-2018-11766: Apache Hadoop privilege escalation vulnerability Severity: Critical Vendor: The Apache Software Foundation Versions Affected: Apache Hadoop versions from 2.7.4 to 2.7.6 Description: In Apache Hadoop 2.7.4 to 2.7.6, the security fix for CVE-2016-6811 is incomplete. A user who can escalate to yarn user can possibly run arbitrary commands as root user. Mitigation: Users should upgrade to 2.7.7 or upper. If you are using the affected version of Apache Hadoop and there are any users who can escalate to yarn user and cannot escalate to root user, remove the permission to escalate to yarn user from them. Credit: This issue was discovered by Wilfred Spiegelenburg.
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