Sigma rule: Atlassian Confluence CVE-2022-26134

Rule

Title

Atlassian Confluence CVE-2022-26134

Status

test

Level

high

Author

Nasreddine Bencherchali (Nextron Systems)

Date

2022-06-03

File

rules-emerging-threats/2022/Exploits/CVE-2022-26134/proc_creation_lnx_exploit_cve_2022_26134_atlassian_confluence.yml

Commit

ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects spawning of suspicious child processes by Atlassian Confluence server which may indicate successful exploitation of CVE-2022-26134

Log source

product

linux

category

process_creation

Detection

selection:
    # Monitor suspicious child processes spawned by Confluence
    ParentImage|startswith: '/opt/atlassian/confluence/'
    ParentImage|endswith: '/java'
    CommandLine|contains:
        - '/bin/sh'
        - 'bash'
        - 'dash'
        - 'ksh'
        - 'zsh'
        - 'csh'
        - 'fish'
        - 'curl'
        - 'wget'
        - 'python'
condition: selection

False positives (as the rule lists them)

• Unknown

Tags

• attack.initial-access
• attack.execution
• attack.t1190
• attack.t1059
• cve.2022-26134
• detection.emerging-threats

CVEs this rule names

• CVE-2022-26134

MITRE ATT&CK ids this rule names

• T1059
• T1190

Related rules

• 245f92e3-c4da-45f1-9070-bc552e06db11 (derived)

References

• https://www.volexity.com/blog/2022/06/02/zero-day-exploitation-of-atlassian-confluence/

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-emerging-threats/2022/Exploits/CVE-2022-26134/proc_creation_lnx_exploit_cve_2022_26134_atlassian_confluence.yml