CVE-2021-33036

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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.

Apache Hadoop

rki_Answer

Gold ⭐️

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)

rki_Answer

Gold ⭐️

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)

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VidyaSargur

Community Manager

@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.

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