VulnerabilityModified
CVE-2020-27847
A vulnerability exists in the SAML connector of the github.com/dexidp/dex library used to process SAML Signature Validation.
CRITICAL 9.8EPSS 1.72%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.72%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.72% probability · 76th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-228
- Affected
- linuxfoundation/dex
- Source
- secalert@redhat.com
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1907732Issue Tracking, Third Party Advisory
- https://github.com/dexidp/dex/security/advisories/GHSA-m9hp-7r99-94h5Patch, Third Party Advisory
- https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1907732Issue Tracking, Third Party Advisory
- https://github.com/dexidp/dex/security/advisories/GHSA-m9hp-7r99-94h5Patch, Third Party Advisory
- https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.