Attacker Value
Very High
(1 user assessed)
Exploitability
High
(1 user assessed)
User Interaction
None
Privileges Required
Low
Attack Vector
Network
1

CVE-2017-16921

Disclosure Date: December 08, 2017 •
CVE-2017-16921 CVSS v3 Base Score: 8.8
Add MITRE ATT&CK tactics and techniques that apply to this CVE.
Initial Access
Techniques
Validation
Validated

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.

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1
Ratings
  • Attacker Value
    Very High
  • Exploitability
    High
Common in enterpriseVulnerable in default configurationAuthenticated
Technical Analysis

Patch : update to OTRS 6.0.2 to fix this specific issue but updating to 6.0.32 is recommended.

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CVSS V3 Severity and Metrics
Base Score:
8.8 High
Impact Score:
5.9
Exploitability Score:
2.8
Vector:
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
Low
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
High
Integrity (I):
High
Availability (A):
High

General Information

Offensive Application
Unknown
Utility Class
Unknown
Ports
Unknown
OS
Unknown
Vulnerable Versions
n/a
Prerequisites
Unknown
Discovered By
Unknown
PoC Author
Unknown
Metasploit Module
Unknown
Reporter
Unknown

Vendors

  • debian,
  • otrs

Products

  • debian linux 7.0,
  • debian linux 8.0,
  • debian linux 9.0,
  • otrs 4.0.1,
  • otrs 4.0.10,
  • otrs 4.0.11,
  • otrs 4.0.12,
  • otrs 4.0.13,
  • otrs 4.0.14,
  • otrs 4.0.15,
  • otrs 4.0.16,
  • otrs 4.0.17,
  • otrs 4.0.18,
  • otrs 4.0.19,
  • otrs 4.0.2,
  • otrs 4.0.20,
  • otrs 4.0.21,
  • otrs 4.0.22,
  • otrs 4.0.23,
  • otrs 4.0.24,
  • otrs 4.0.25,
  • otrs 4.0.26,
  • otrs 4.0.3,
  • otrs 4.0.4,
  • otrs 4.0.5,
  • otrs 4.0.6,
  • otrs 4.0.7,
  • otrs 4.0.8,
  • otrs 4.0.9,
  • otrs 5.0.0,
  • otrs 5.0.1,
  • otrs 5.0.10,
  • otrs 5.0.11,
  • otrs 5.0.12,
  • otrs 5.0.13,
  • otrs 5.0.14,
  • otrs 5.0.15,
  • otrs 5.0.16,
  • otrs 5.0.17,
  • otrs 5.0.18,
  • otrs 5.0.19,
  • otrs 5.0.2,
  • otrs 5.0.20,
  • otrs 5.0.21,
  • otrs 5.0.22,
  • otrs 5.0.23,
  • otrs 5.0.24,
  • otrs 5.0.3,
  • otrs 5.0.4,
  • otrs 5.0.5,
  • otrs 5.0.6,
  • otrs 5.0.7,
  • otrs 5.0.8,
  • otrs 5.0.9,
  • otrs 6.0.0,
  • otrs 6.0.1
Technical Analysis