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  5. CVE-2019-20894

CVE-2019-20894: Improper Certificate Validation

September 2, 2021

Traefik 2.x, in certain configurations, allows HTTPS sessions to proceed without mutual TLS verification in a situation where ERR_BAD_SSL_CLIENT_AUTH_CERT should have occurred.

References

  • github.com/advisories/GHSA-q9mp-79cp-9g8j
  • github.com/containous/traefik/commit/2b353971696717e980521b0e4baa1eba66c8d2bf
  • github.com/containous/traefik/issues/5312
  • github.com/containous/traefik/pull/7008
  • nvd.nist.gov/vuln/detail/CVE-2019-20894

Code Behaviors & Features

Detect and mitigate CVE-2019-20894 with GitLab Dependency Scanning

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Affected versions

All versions before 2.2.2

Fixed versions

  • 2.2.2

Solution

Upgrade to version 2.2.2 or above.

Impact 7.5 HIGH

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

Learn more about CVSS

Weakness

  • CWE-295: Improper Certificate Validation

Source file

go/github.com/traefik/traefik/v2/CVE-2019-20894.yml

Spotted a mistake? Edit the file on GitLab.

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