CVE-2020-27847: Improper Handling of Syntactically Invalid Structure

May 28, 2021 (updated June 2, 2021)

A vulnerability exists in the SAML connector of the github.com/dexidp/dex library used to process SAML Signature Validation. This flaw allows an attacker to bypass SAML authentication. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

References

bugzilla.redhat.com/show_bug.cgi?id=1907732
mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/
nvd.nist.gov/vuln/detail/CVE-2020-27847

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