Vulnerability Description
Dex is a federated OpenID Connect provider written in Go. In Dex before version 2.27.0 there is a critical set of vulnerabilities which impacts users leveraging the SAML connector. The vulnerabilities enables potential signature bypass due to issues with XML encoding in the underlying Go library. The vulnerabilities have been addressed in version 2.27.0 by using the xml-roundtrip-validator from Mattermost (see related references).
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linuxfoundation | Dex | < 2.27.0 |
Related Weaknesses (CWE)
References
- https://github.com/dexidp/dex/commit/324b1c886b407594196113a3dbddebe38eecd4e8PatchThird Party Advisory
- https://github.com/dexidp/dex/releases/tag/v2.27.0Third Party Advisory
- https://github.com/dexidp/dex/security/advisories/GHSA-m9hp-7r99-94h5Third Party Advisory
- https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unsNot ApplicableThird Party Advisory
- https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unsNot ApplicableThird Party Advisory
- https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unsNot ApplicableThird Party Advisory
- https://github.com/russellhaering/goxmldsig/security/advisories/GHSA-q547-gmf8-8Not ApplicableThird Party Advisory
- https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/Not ApplicableThird Party Advisory
- https://github.com/dexidp/dex/commit/324b1c886b407594196113a3dbddebe38eecd4e8PatchThird Party Advisory
- https://github.com/dexidp/dex/releases/tag/v2.27.0Third Party Advisory
- https://github.com/dexidp/dex/security/advisories/GHSA-m9hp-7r99-94h5Third Party Advisory
- https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unsNot ApplicableThird Party Advisory
- https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unsNot ApplicableThird Party Advisory
- https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unsNot ApplicableThird Party Advisory
- https://github.com/russellhaering/goxmldsig/security/advisories/GHSA-q547-gmf8-8Not ApplicableThird Party Advisory
FAQ
What is CVE-2020-26290?
CVE-2020-26290 is a vulnerability with a CVSS score of 9.3 (CRITICAL). Dex is a federated OpenID Connect provider written in Go. In Dex before version 2.27.0 there is a critical set of vulnerabilities which impacts users leveraging the SAML connector. The vulnerabilities...
How severe is CVE-2020-26290?
CVE-2020-26290 has been rated CRITICAL with a CVSS base score of 9.3/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2020-26290?
Check the references section above for vendor advisories and patch information. Affected products include: Linuxfoundation Dex.