CVE-2020-27847

moderate-risk
Published 2021-05-28

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. This flaw affects dex versions before 2.27.0.

Do I need to act?

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0.36% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (1)

Dex

Affected Vendors

Linuxfoundation

References (6)

Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1907732
Patch https://github.com/dexidp/dex/security/advisories/GHSA-m9hp-7r99-94h5
Vendor Advisory https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1907732
Patch https://github.com/dexidp/dex/security/advisories/GHSA-m9hp-7r99-94h5
Vendor Advisory https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/
38
/ 100
moderate-risk
Severity 32/34 · Critical
Exploitability 1/34 · Minimal
Exposure 5/34 · Minimal