Potential Exploitation of CVE-2025-5054 or CVE-2025-4598

experimentalmedium

log source: linux · process_creationauthor Milad Cheraghidate 2026-04-28

description

What this is, in brief.

Detects attempts of an attacker to enable core dumps for set-user-ID (SUID) processes by modifying the system file /proc/sys/fs/suid_dumpable, typically by setting its value to 1 or 2. Enabling this feature allows memory dumps (core dumps) of SUID processes, which usually run with elevated privileges. These dumps may contain sensitive information such as passwords, cryptographic keys or other secrets. CVE-2025-5054: Information leak via core dumps from SUID binaries using apport. CVE-2025-4598: Information disclosure in systemd-coredump due to insecure handling of SUID process memory dumps.

rule source (YAML)

title: Potential Exploitation of CVE-2025-5054 or CVE-2025-4598
id: 33b3cfb1-574e-44b9-b527-fbf9303b9d7b
status: experimental
description: |
    Detects attempts of an attacker to enable core dumps for set-user-ID (SUID) processes by modifying the system file /proc/sys/fs/suid_dumpable, typically by setting its value to 1 or 2.
    Enabling this feature allows memory dumps (core dumps) of SUID processes, which usually run with elevated privileges.
    These dumps may contain sensitive information such as passwords, cryptographic keys or other secrets.
    CVE-2025-5054: Information leak via core dumps from SUID binaries using apport.
    CVE-2025-4598: Information disclosure in systemd-coredump due to insecure handling of SUID process memory dumps.
references:
    - https://nvd.nist.gov/vuln/detail/CVE-2025-5054
    - https://nvd.nist.gov/vuln/detail/CVE-2025-4598
    - https://blog.qualys.com/vulnerabilities-threat-research/2025/05/29/qualys-tru-discovers-two-local-information-disclosure-vulnerabilities-in-apport-and-systemd-coredump-cve-2025-5054-and-cve-2025-4598
author: Milad Cheraghi
date: 2026-04-28
tags:
    - attack.privilege-escalation
    - attack.credential-access
    - attack.t1548
    - attack.t1003
    - cve.2025-5054
    - cve.2025-4598
    - detection.emerging-threats
logsource:
    product: linux
    category: process_creation
detection:
    selection_suid_dumpable_sysctl:
        Image|endswith:
            - '/sbin/sysctl'
            - '/bin/sysctl'
        CommandLine|contains: 'fs.suid_dumpable='
    selection_echo_proc_write:
        Image|endswith:
            - '/bin/bash'
            - '/bin/sh'
        CommandLine|contains:
            - 'echo 1 > /proc/sys/fs/suid_dumpable'
            - 'echo 2 > /proc/sys/fs/suid_dumpable'
            - 'echo 1 >/proc/sys/fs/suid_dumpable'
            - 'echo 2 >/proc/sys/fs/suid_dumpable'
            - 'echo 1> /proc/sys/fs/suid_dumpable'
            - 'echo 2> /proc/sys/fs/suid_dumpable'
            - 'echo 1>/proc/sys/fs/suid_dumpable'
            - 'echo 2>/proc/sys/fs/suid_dumpable'
    condition: 1 of selection_*
falsepositives:
    - System administrators enabling debugging temporarily
    - Legitimate crash diagnostic operations
level: medium

detects techniques (2)

ATT&CK techniques this enables or maps to.

references

External citations — patches, advisories, analysis.