Detections
Analytics

1.12 AZLX-23-000220

Information

Amazon Linux 2023 must restrict usage of ptrace to descendant processes.

GROUP ID: V-274005RULE ID: SV-274005r1120003

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://workbench.cisecurity.org/benchmarks/26107

Item Details

Category: SYSTEM AND COMMUNICATIONS PROTECTION

References: 800-53|SC-2, CAT|II, CCI|CCI-001082, Rule-ID|SV-274005r1120003_rule, STIG-ID|AZLX-23-000220, Vuln-ID|V-274005

Plugin: Unix

Control ID: ef5e014901ad5301ce3a85ad8cee0a6ee951df64ff0d35def8131b692226bd2c