OS Command Injection in OTRS and Debian Linux - CVE-2017-16921

Vulnerability details

The vulnerability allows a remote authenticated user to execute arbitrary code.

In OTRS 6.0.x up to and including 6.0.1, OTRS 5.0.x up to and including 5.0.24, and OTRS 4.0.x up to and including 4.0.26, an attacker who is logged into OTRS as an agent can manipulate form parameters (related to PGP) and execute arbitrary shell commands with the permissions of the OTRS or web server user.

Affected software

How to mitigate CVE-2017-16921

Links to Public Exploits and PoC-codes

• Exploit #6284 - OTRS 5.0.x/6.0.x - Remote Command Execution (June 17, 2021)
• Exploit #5390 - OTRS 6.0.1 - Remote Command Execution (2) (May 9, 2021)

External References

• https://lists.debian.org/debian-lts-announce/2017/12/msg00015.html
• https://www.debian.org/security/2017/dsa-4066
• https://www.exploit-db.com/exploits/43853/
• https://www.otrs.com/security-advisory-2017-09-security-update-otrs-framework/

Related Security Bulletins

• OS Command Injection in OTRS
• OS Command Injection in otrs (Alpine package)