RCE in Otrs
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 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.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.199 (97.4th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 97.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.199 · newest: 0.199 · change: 0.000
Affected products
- Otrs — versions 4.0.1, 4.0.2, 4.0.3
- Debian Linux — versions 7.0, 8.0, 9.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.otrs.com/security-advisory-2017-09-security-update-otrs-framework/ (Patch, Issue Tracking, Vendor Advisory)
- lists.debian.org/debian-lts-announce/2017/12/msg00015.html (mailing-list, Mailing List, Third Party Advisory)
- www.exploit-db.com/exploits/43853/ (Exploit, VDB Entry, Third Party Advisory, exploit)
- www.debian.org/security/2017/dsa-4066 (vendor-advisory, Mailing List, Third Party Advisory)
- packetstormsecurity.com/files/162295/OTRS-6.0.1-Remote-Command-Execution.html
Frequently asked questions
- What is CVE-2017-16921?
- CVE-2017-16921 is a high-severity vulnerability in Otrs, classified under OS Command Injection. CVSS score: 8.8/10. Published 2017-12-08.
- How severe is CVE-2017-16921?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2017-16921 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.