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  5. CVE-2019-11881

CVE-2019-11881: Improper Input Validation

June 10, 2019 (updated June 11, 2019)

A vulnerability exists in Rancher in the login component, where the errorMsg parameter can be tampered to display arbitrary content, filtering tags but not special characters or symbols. There’s no other limitation of the message, allowing malicious users to lure legitimate users to visit phishing sites with scare tactics, e.g., displaying a “This version of Rancher is outdated, please visit https://malicious.rancher.site/upgrading" message.

References

  • github.com/rancher/rancher/issues/20216
  • nvd.nist.gov/vuln/detail/CVE-2019-11881

Code Behaviors & Features

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Affected versions

Version 2.1.4

Fixed versions

  • v2.1.5

Solution

Upgrade to version 2.1.5 or above.

Impact 4.7 MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N

Learn more about CVSS

Source file

go/github.com/rancher/rancher/pkg/auth/CVE-2019-11881.yml

Spotted a mistake? Edit the file on GitLab.

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