Detections
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AZLX-23-000220 - Amazon Linux 2023 must restrict usage of ptrace to descendant processes.
Information
Unrestricted usage of ptrace allows compromised binaries to run ptrace on other processes of the user. Like this, the attacker can steal sensitive information from the target processes (e.g., SSH sessions, web browser, etc.) without any additional assistance from the user (i.e., without resorting to phishing).Solution
Configure Amazon Linux 2023 to restrict usage of ptrace to descendant processes by adding the following line to a file, in the "/etc/sysctl.d" directory:kernel.yama.ptrace_scope = 1
The system configuration files need to be reloaded for the changes to take effect. To reload the contents of the files, run the following command:
$ sudo sysctl --system
See Also
https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_Amazon_Linux_2023_V1R3_STIG.zip
Item Details
Audit Name: DISA Amazon Linux 2023 STIG v1r3
Category: SYSTEM AND COMMUNICATIONS PROTECTION
References: 800-53|SC-2, CAT|II, CCI|CCI-001082, Rule-ID|SV-274005r1198253_rule, STIG-ID|AZLX-23-000220, Vuln-ID|V-274005
Plugin: Unix
Control ID: b11ce9797ebbb1c5983983c794fcbf4bcba9f22cf5540ff4d2e68754afaf6d91