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new: silent-call rules - #6230

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mromanode wants to merge 2 commits into
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mromanode:rules/tomcat-manager-deploy-sudo-gdb
Open

new: silent-call rules#6230
mromanode wants to merge 2 commits into
SigmaHQ:masterfrom
mromanode:rules/tomcat-manager-deploy-sudo-gdb

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Summary of the Pull Request

Adds new detection rules covering the Silent;Call exploit chain against Cisco CUCM 15.x, where an attacker bypasses Tomcat Manager's source-address restriction via a forged X-Forwarded-For: 127.0.0.1 header, deploys a malicious WAR file to achieve RCE as the tomcat user, and escalates to root by abusing a sudoers entry permitting passwordless gdb execution against PID 1.

The rules cover the full attack chain:

  • Web-level: PUT/POST requests to Tomcat Manager deployment endpoints (/manager/deploy, /manager/text/deploy, /manager/html/upload)
  • Process-level: sudo gdb attach to PID 1 with command files (--command=, -x ) in temporary directories

Changelog

  • new: Tomcat Manager WAR File Deployment
  • new: Sudo GDB Attach to PID 1

Example Log Event

Fixed Issues

SigmaHQ Rule Creation Conventions

If your PR adds new rules, please consider following and applying these conventions

@github-actions github-actions Bot added Rules Review Needed The PR requires review Linux Pull request add/update linux related rules labels Aug 14, 2026
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