Phoenix Studio

Convert indexed Sigma rules into analyst-ready detections.

This studio is built around Phoenix's own rule corpus, not a blank editor. Search by title or rule id, choose a local pySigma backend, then reveal pipelines only when you actually need them.

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Indexed Rules

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pySigma Versions

Newest: 2.0.1

Translation Workspace

Shape the rule before it leaves Phoenix

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Active Rule

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

pySigma version

Backends follow their supported pySigma version. Select 1.5.1 for Elasticsearch, Kusto, and other 1.x plugins.

Backend

Format

Target Profile

Splunk

Splunk through pysigma-backend-splunk.

Format Mode

Default

Default pySigma output mode for this backend.

Conversion Output

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

Using Splunk · Default · pySigma 2.0.1

Translation controls

Adjust the rule on the left, then regenerate when you want a fresh backend-native query.

BackendSplunkFormatDefaultVersion2.0.1

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

CLI command

Sigma CLI 4.0.0 · Install matching versions, then run from the Phoenix project directory.

python -m pip install 'sigma-cli==4.0.0' 'pysigma==2.0.1' 'pysigma-backend-splunk==3.0.0'
sigma convert --without-pipeline -t splunk -f default 'sigma/rules-emerging-threats/2025/Exploits/CVE_2025_4598/proc_creation_lnx_exploit_cve_2025_5054_or_cve_2025_4598.yml'