Improper Input Validation Affecting github.com/rancher/rancher/pkg/auth/providers/saml package, versions <2.3.0-alpha4
Snyk CVSS
Attack Complexity
Low
User Interaction
Required
Scope
Changed
Threat Intelligence
Exploit Maturity
Proof of concept
EPSS
0.08% (32nd
percentile)
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Test your applications- Snyk ID SNYK-GOLANG-GITHUBCOMRANCHERRANCHERPKGAUTHPROVIDERSSAML-6673740
- published 25 Apr 2024
- disclosed 24 May 2022
- credit Unknown
Introduced: 24 May 2022
CVE-2019-11881 Open this link in a new tabHow to fix?
Upgrade github.com/rancher/rancher/pkg/auth/providers/saml to version 2.3.0-alpha4 or higher.
Overview
Affected versions of this package are vulnerable to Improper Input Validation via the errorMsg parameter in the login component. An attacker can display arbitrary content to users, potentially leading them to phishing sites by crafting messages that appear legitimate but contain malicious links.
PoC
https://RANCHER:PORT/login?errorMsg=%68%74%74%70%73%3a%2f%2f%77%77%77%2e%6f%77%61%73%70%2e%6f%72%67%2f%69%6e%64%65%78%2e%70%68%70%2f%57%65%62%5f%50%61%72%61%6d%65%74%65%72%5f%54%61%6d%70%65%72%69%6e%67