Vulnerabilities > CVE-2020-26290 - Unspecified vulnerability in Linuxfoundation DEX
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
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).
Vulnerable Configurations
References
- https://github.com/dexidp/dex/commit/324b1c886b407594196113a3dbddebe38eecd4e8
- https://github.com/dexidp/dex/commit/324b1c886b407594196113a3dbddebe38eecd4e8
- https://github.com/dexidp/dex/releases/tag/v2.27.0
- https://github.com/dexidp/dex/releases/tag/v2.27.0
- https://github.com/dexidp/dex/security/advisories/GHSA-m9hp-7r99-94h5
- https://github.com/dexidp/dex/security/advisories/GHSA-m9hp-7r99-94h5
- https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-attributes.md
- https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-attributes.md
- https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-directives.md
- https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-directives.md
- https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-elements.md
- https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-elements.md
- https://github.com/russellhaering/goxmldsig/security/advisories/GHSA-q547-gmf8-8jr7
- https://github.com/russellhaering/goxmldsig/security/advisories/GHSA-q547-gmf8-8jr7
- https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/
- https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/