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Status Future consideration
Workspace Instana
Categories Agent
Created by Guest
Created on May 11, 2022

Secure files in /tmp/.instana

Original issue description:

Our security policy does not accept files with permission to write and execute inside the directory "/tmp", as INSTANA creates this type of file in "/tmp/.instana" we have several issues of vulnerability. We verified in the Instana documentation that these files cannot be removed, we also tried to change their permissions but every time the Instana agent is restarted it returns to the original permissions with (read, write and execute) we would like these files to keep only permission to read, even after restarting the Instana agent.

Additional information:

As per the IBM's ITSS for Linux Redhat v7/8 servers is not allowed to use word-writable files and it’s considered as a security deviation (Section IZ.1.8.22.4, "Protecting Resources - non-OSRs"). But, if you can remove the “write for all” from that file that won’t be a deviation (it might not to be really needed to have write access to that jar file for all users). Basically just 777 and 776 permissions are not allowed.


Also you can take a look at the sticky bit configuration for directories with world-writable access - it might be useful:


More details about the TechSpec for Linux in this link: https://ibm.box.com/s/sb017bgb8o8sdcwpr8uih96pzs46jfovMain Tech Spec web: https://w3.ibm.com/ocean/w3publisher/gts-technical-specifications/technical-specifications/sponsored


Slack Support Channel for TechSpec Linux: https://kyndryl.slack.com/archives/C028DSC60MC