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AlmaLinux OS 9 must restrict usage of ptrace to descendant processes.

Overview

Finding IDVersionRule IDIA ControlsSeverity
V-269424ALMA-09-040940SV-269424r1198253_ruleCCI-001082medium
Description
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).
STIGDate
Cloud Linux AlmaLinux OS 9 Security Technical Implementation Guide2026-05-22

Related Frameworks

1 mapping across 4 frameworks
SCF0 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (1) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

SEA-03.2Application Partitioning
1.00
NIST 800-530 mappings

No source states a mapping between these directly.

Also reachable in 2 hops (19) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

AC-3Access Enforcement
1.00
AC-6(10)Prohibit Non-privileged Users from Executing Privileged Functions
1.00
AU-9Protection of Audit Information
1.00
CM-5(1)Automated Access Enforcement and Audit Records
1.00
CM-5(3)Signed Components
1.00
CM-5(6)Limit Library Privileges
1.00
CM-6Configuration Settings
1.00
CM-7Least Functionality
1.00
IA-5(2)Public Key-based Authentication
1.00
SC-2Separation of System and User Functionality
1.00

+9 more (top 10 by confidence shown)

NIST 800-1710 mappings

No source states a mapping between these directly.

Also reachable in 3 hops (1) derived by us, not asserted by any source

Each of these is a route we composed by chaining published mappings. No publisher states a relationship between the two endpoints.

3.13.3
1.00
CCI1 mapping
CCI-001082
1.00

Details

Check Text (C-269424r1198253_chk)

Verify AlmaLinux OS 9 restricts usage of ptrace to descendant processes (1), admins only (2), or disables ptrace entirely (3) with the following command: $ sysctl kernel.yama.ptrace_scope kernel.yama.ptrace_scope = 1 If the returned line has a value of "0" or a line is not returned, this is a finding. Check that the configuration files are present to enable this kernel parameter. $ /usr/lib/systemd/systemd-sysctl --cat-config | egrep -v '^(#|;)' | grep -F kernel.yama.ptrace_scope | tail -1 kernel.yama.ptrace_scope = 1 If "kernel.yama.ptrace_scope" is equal to "0" or nothing is returned, this is a finding.

Fix Text (F-73356r1049683_fix)

Configure AlmaLinux OS 9 to restrict usage of ptrace to with the following command: $ echo "kernel.yama.ptrace_scope = 1" > /etc/sysctl.d/60-ptrace.conf Load settings from all system configuration files with the following command: $ sysctl --system