Is CVE-2020-27847 in the CISA KEV catalog?

No. CVE-2020-27847 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-27847?

CVE-2020-27847 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2020-27847?

CVE-2020-27847 has an EPSS score of 1.72% (75th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-27847?

Upgrade dex to 2.27.0 or later.

CVE & CISA-KEV Catalog

CVE-2020-27847

CRITICALEPSS 75th pctl

9.8

CVSS v3

NVD

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.

CWE-228

How to fix

Remediation Available

dexNVD

Affected:< 2.27.0Fixed in:2.27.0CVE-2020-27847derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

1.72%probability of exploitation in 30 days

75thpercentile

Elevated risk: more likely to be exploited than 75% of all known CVEs.

References

Patch1

github.com

Vendor Advisory1

mattermost.com

Third-Party Advisory1

bugzilla.redhat.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.