Open Redirect Affecting github.com/containous/traefik/api package, versions <1.7.26>2.2.0 <2.2.8>2.3.0-rc0 <2.3.0-rc3


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

Exploit Maturity
Proof of concept
EPSS
6.02% (94th percentile)

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  • Snyk IDSNYK-GOLANG-GITHUBCOMCONTAINOUSTRAEFIKAPI-597114
  • published31 Jul 2020
  • disclosed31 Jul 2020
  • creditUnknown

Introduced: 31 Jul 2020

CVE-2020-15129  (opens in a new tab)
CWE-601  (opens in a new tab)

How to fix?

Upgrade github.com/containous/traefik/api to version 1.7.26, 2.2.8, 2.3.0-rc3 or higher.

Overview

github.com/containous/traefik/api is a modern HTTP reverse proxy and load balancer that makes deploying microservices easy.

Affected versions of this package are vulnerable to Open Redirect. 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 Scores

version 3.1