CVE-2020-15129 Information

Description

In Traefik before versions 1.7.26 2.2.8 and 2.3.0-rc3 there exists a potential open redirect vulnerability in Traefik’s handling of the \X-Forwarded-Prefix\ header. The Traefik API dashboard component doesn’t validate that the value of the header \X-Forwarded-Prefix\ is a site relative path and will redirect to any header provided URI. Successful exploitation of an open redirect can be used to entice victims to disclose sensitive information. Active Exploitation of this issue is unlikely as it would require active header injection however the Traefik team addressed this issue nonetheless to prevent abuse in e.g. cache poisoning scenarios.

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N

Reference

https://github.com/containous/traefik/commit/e63db782c11c7b8bfce30be4c902e7ef8f9f33d2 https://github.com/containous/traefik/pull/7109 https://github.com/containous/traefik/releases/tag/v1.7.26 https://github.com/containous/traefik/releases/tag/v2.2.8 https://github.com/containous/traefik/releases/tag/v2.3.0-rc3 https://github.com/containous/traefik/security/advisories/GHSA-6qq8-5wq3-86rp

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

CHANGED

Integrity Impact

LOW

Availability Impact

LOW

Base Score

NONE

Base Severity

4.7