CVE-2020-26290

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).

Link	Resource
https://github.com/dexidp/dex/security/advisories/GHSA-m9hp-7r99-94h5	Third Party Advisory
https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-attributes.md	Not Applicable Third Party Advisory
https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-directives.md	Not Applicable Third Party Advisory
https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/	Not Applicable Third Party Advisory
https://github.com/dexidp/dex/releases/tag/v2.27.0	Third Party Advisory
https://github.com/dexidp/dex/commit/324b1c886b407594196113a3dbddebe38eecd4e8	Patch Third Party Advisory
https://github.com/russellhaering/goxmldsig/security/advisories/GHSA-q547-gmf8-8jr7	Not Applicable Third Party Advisory
https://github.com/mattermost/xml-roundtrip-validator/blob/master/advisories/unstable-elements.md	Not Applicable Third Party Advisory

Configuration 1

cpe:2.3:a:linuxfoundation:dex:*:*:*:*:*:*:*:*

---

Published : 2020-12-28 08:15

Updated : 2020-12-30 03:12

---

NVD link : CVE-2020-26290

Mitre link : CVE-2020-26290

No products.

CWE-347

Improper Verification of Cryptographic Signature