Apache Threading Error — Sigma Rule

Rule metadata and linked tags

Author: Florian Roth (Nextron Systems). Source status: test; severity: medium. Source dates: 2019-01-22 / 2021-11-27.

{
  "service": "apache",
  "definition": "Requirements: Must be able to collect the error.log file"
}

Pinned original Sigma rule · Detection Rule License 1.1

Source SHA-256: 257c6414b97175c93fc6de83b00b1efc8c2e281c788676bae7c589cc16fdecc5

Detection logic

Original source YAML. Source-tag agreement is not proof of complete semantic coverage. This rule has not been compiled for a SIEM backend or validated against live telemetry here.

title: Apache Threading Error
id: e9a2b582-3f6a-48ac-b4a1-6849cdc50b3c
status: test
description: Detects an issue in apache logs that reports threading related errors
references:
    - https://github.com/hannob/apache-uaf/blob/da40f2be3684c8095ec6066fa68eb5c07a086233/README.md
author: Florian Roth (Nextron Systems)
date: 2019-01-22
modified: 2021-11-27
tags:
    - attack.initial-access
    - attack.lateral-movement
    - attack.t1190
    - attack.t1210
logsource:
    service: apache
    definition: 'Requirements: Must be able to collect the error.log file'
detection:
    keywords:
        - '__pthread_tpp_change_priority: Assertion `new_prio == -1 || (new_prio >= fifo_min_prio && new_prio <= fifo_max_prio)'
    condition: keywords
falsepositives:
    - 3rd party apache modules - https://bz.apache.org/bugzilla/show_bug.cgi?id=46185
level: medium

Original YAML and metadata in JSON

False positives

• 3rd party apache modules - https://bz.apache.org/bugzilla/show_bug.cgi?id=46185

Source references

• https://github.com/hannob/apache-uaf/blob/da40f2be3684c8095ec6066fa68eb5c07a086233/README.md