Emerging Threatmediumtest

Zimbra Collaboration Suite Email Server Unauthenticated RCE

Detects an attempt to leverage the vulnerable servlet "mboximport" for an unauthenticated remote command injection

Convert In Phoenix Studio

Open this Sigma rule in the converter with the YAML preloaded and ready for backend selection.

@gott_cyberCreated Wed Aug 17Updated Mon Jan 02dd218fb6-4d02-42dc-85f0-a0a376072efd2022

Emerging Threat

Active Threat

Developed to detect an active or emerging threat. Prioritize investigation of any alerts and correlate with threat intelligence.

Log Source

Web Server Log

CategoryWeb Server Log← raw: webserver

HTTP access logs from web servers capturing request paths, methods, and status codes.

Detection Logic

detection:
    selection_servlet:
        cs-method: 'POST'
        cs-uri-query|contains: '/service/extension/backup/mboximport\?'
        cs-uri-query|contains|all:
            - 'account-name'
            - 'ow'
            - 'no-switch'
            - 'append'
        sc-status:
            - 401
            - 200
    selection_shell:
        cs-uri-query|contains: '/zimbraAdmin/'
        cs-uri-query|endswith: '.jsp'
        sc-status|contains: '200'
    condition: 1 of selection_*