CVE-2017-16921

Severity: high (CVSS 8.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 19.9% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2017-12-08 · updated 2026-06-17
Weakness: CWE-78

Description

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 products

Debian Linux: 7.0, 8.0, 9.0
OTRS AG OTRS: 4.0.1, 4.0.2, 4.0.3, 4.0.4, 4.0.5, 4.0.6 (+61)

References

http://packetstormsecurity.com/files/162295/OTRS-6.0.1-Remote-Command-Execution.html
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/
http://packetstormsecurity.com/files/162295/OTRS-6.0.1-Remote-Command-Execution.html
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/

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