Flock - Privilege Escalation
ID: privesc-flock
Severity: high
Author: daffainfo
Tags: code,linux,flock,privesc,local
Description
Section titled “Description”flock is a command-line utility in Unix-like operating systems that is used to manage file locks. It can be used to synchronize access to a file among multiple processes, preventing conflicts and ensuring data integrity. Additionally, flock can be used in shell scripts to control access to critical sections of code.
YAML Source
Section titled “YAML Source”id: privesc-flock
info: name: Flock - Privilege Escalation author: daffainfo severity: high description: | flock is a command-line utility in Unix-like operating systems that is used to manage file locks. It can be used to synchronize access to a file among multiple processes, preventing conflicts and ensuring data integrity. Additionally, flock can be used in shell scripts to control access to critical sections of code. reference: - https://gtfobins.github.io/gtfobins/flock/ metadata: verified: true max-request: 3 tags: code,linux,flock,privesc,local
self-contained: truecode: - engine: - sh - bash source: | whoami
- engine: - sh - bash source: | flock -u / whoami
- engine: - sh - bash source: | sudo flock -u / whoami
matchers-condition: and matchers: - type: word part: code_1_response words: - "root" negative: true
- type: dsl dsl: - 'contains(code_2_response, "root")' - 'contains(code_3_response, "root")' condition: or# digest: 4a0a004730450220072bde0174a1fa2f7a052070195451b79aad0293aaa92ee3b143357e26b42e0f022100961ad3876b40112db2ec728c93f061b3a2f049579b56c117f9588426ddb1b5d9:922c64590222798bb761d5b6d8e72950Guide to check the vulnerabilities
Section titled “Guide to check the vulnerabilities”This template is used to detect vulnerabilities in web applications. It can be used with the Nuclei tool to scan for specific patterns or behaviors.
$ nuclei -u "URL" -t "code/privilege-escalation/linux/binary/privesc-flock.yaml"