question Re: CVE-2021-33036 in Support Questions

CVE-2021-33036

jeromedruais — Tue, 26 Jul 2022 08:29:03 GMT

Hello, I would like to know if this CVE which impacts Apache Hadoop is already resolve into HDP or CDP products ?

In Apache Hadoop 2.2.0 to 2.10.1, 3.0.0-alpha1 to 3.1.4, 3.2.0 to 3.2.2, and 3.3.0 to 3.3.1, a user who can escalate to yarn user can possibly run arbitrary commands as root user. Users should upgrade to Apache Hadoop 2.10.2, 3.2.3, 3.3.2 or higher.

https://nvd.nist.gov/vuln/detail/CVE-2021-33036

Thanks in advance for your help.

Re: CVE-2021-33036

rki_ — Tue, 26 Jul 2022 09:57:54 GMT

Hi @jeromedruais ,

This CVE will be addressed in CDP 7.1.8. Till then, you can use the below precautions:

1. ensure in the linux sudoers files that there is no entry allowing users or groups to run as the yarn account. 2. ensure the cluster is kerberized

3. ensure the permissions for the yarn keytabs are not readable by others. find /var/run/cloudera-scm-agent/ | grep yarn | grep keytab (by default in kerberized cdp, others can't read these service keytabs)

Re: CVE-2021-33036

VidyaSargur — Fri, 29 Jul 2022 05:40:49 GMT

@jeromedruais, Has the reply helped resolve your issue? If so, please mark the appropriate reply as the solution, as it will make it easier for others to find the answer in the future.