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CVE-2021-23365: Improper Authentication

June 23, 2021

The package github.com/tyktechnologies/tyk-identity-broker before 1.1.1 are vulnerable to Authentication Bypass via the Go XML parser which can cause SAML authentication bypass. This is because the XML parser doesn’t guarantee integrity in the XML round-trip (encoding/decoding XML data).

References

  • github.com/TykTechnologies/tyk-identity-broker/commit/243092965b0f93a95a14cb882b5b9a3df61dd5c0
  • github.com/TykTechnologies/tyk-identity-broker/commit/46f70420e0911e4e8b638575e29d394c227c75d0
  • github.com/TykTechnologies/tyk-identity-broker/pull/147
  • github.com/TykTechnologies/tyk-identity-broker/releases/tag/v1.1.1
  • github.com/advisories/GHSA-599h-8wpj-75xj
  • nvd.nist.gov/vuln/detail/CVE-2021-23365

Code Behaviors & Features

Detect and mitigate CVE-2021-23365 with GitLab Dependency Scanning

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Affected versions

All versions before 1.1.1

Fixed versions

  • 1.1.1

Solution

Upgrade to version 1.1.1 or above.

Impact 9.1 CRITICAL

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

Learn more about CVSS

Weakness

  • CWE-287: Improper Authentication
  • CWE-707: Improper Neutralization

Source file

go/github.com/tyktechnologies/tyk-identity-broker/CVE-2021-23365.yml

Spotted a mistake? Edit the file on GitLab.

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