Detections
Analytics

OL09-00-002410 - OL 9 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 OL 9 to restrict usage of ptrace to descendant processes by adding the following line to "/etc/sysctl.d/99-sysctl.conf":

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_Oracle_Linux_9_V1R6_STIG.zip

Item Details

Category: SYSTEM AND COMMUNICATIONS PROTECTION

References: 800-53|SC-2, CAT|II, CCI|CCI-001082, Rule-ID|SV-271749r1198253_rule, STIG-ID|OL09-00-002410, Vuln-ID|V-271749

Plugin: Unix

Control ID: df40ecfea25d4f427cf2d1ba8bf19699a9073ff6fdf1451c5bfa15759e1a5948