OTRS Security Advisory 2019-10

July 12, 2019 — Please read carefully and check if the version of your OTRS system is affected by this vulnerability.

 

Please send information regarding vulnerabilities in OTRS to: security@otrs.org

Security Advisory Details

• ID: OSA-2019-10
• Date: 2019-07-12
• Title: Information Disclosure
• Severity: 3.1. low
• Product: OTRS 6.0.x, OTRSBusiness 6.0.x, OTRS 5.0.x
• Fixed in: OTRS 6.0.20, OTRSBusiness 6.0.21, OTRS 5.0.37
• FULL CVSS v3 VECTOR: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C
• References: CVE-2019-12746

This advisory covers vulnerabilities discovered in the OTRS framework.

Privilege Escalation

A user logged into OTRS as an agent might unknowingly disclose their session ID by sharing the link of an embedded ticket article with third parties. This identifier can be then potentially abused in order to impersonate the agent user.

Affected by this vulnerability are all releases of OTRS 6.0.x up to and including 6.0.19, OTRSBusiness 6.0.x up to and including 6.0.20 and OTRS 5.0.x up to and including 5.0.36.

 

This vulnerability is fixed in the latest versions of OTRS and OTRSBusiness, and it is recommended to upgrade to the latest patch level.

Fixed releases can be found at:

• https://www.otrs.com/category/release-and-security-notes-en/

Detailed information about the changes:

• OTRS 6:
  • https://github.com/OTRS/otrs/commit/fab16a8e54aaf033f460e5f98c673248f29ea49c
  • https://github.com/OTRS/otrs/commit/cc08cb7df9f6dde05de2f8c6cbd59cd5d0952627
• OTRS 5:
  • https://github.com/OTRS/otrs/commit/7ab33e51a4db9f712e979040f644d0d0c39ff0af

 

Thanks to akosiaris AT gmail DOT com for discovering and reporting this issue.