Is CVE-2018-8020 in the CISA KEV catalog?

No. CVE-2018-8020 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2018-8020?

CVE-2018-8020 has a CVSS v3 base score of 7.4 (HIGH).

What is the EPSS score for CVE-2018-8020?

CVE-2018-8020 has an EPSS score of 4.20% (90th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2018-8020?

Upgrade tomcat-native on debian 11 to 1.2.17-1 or later.

CVE & CISA-KEV Catalog

CVE-2018-8020

HIGHEPSS 90th pctl

7.4

CVSS v3

NVD

Description

Apache Tomcat Native 1.2.0 to 1.2.16 and 1.1.23 to 1.1.34 has a flaw that does not properly check OCSP pre-produced responses, which are lists (multiple entries) of certificate statuses. Subsequently, revoked client certificates may not be properly identified, allowing for users to authenticate with revoked certificates to connections that require mutual TLS. Users not using OCSP checks are not affected by this vulnerability.

CWE-295Improper Certificate Validation

How to fix

Remediation Available

tomcat-nativeDebian

Fixed in:1.2.17-1CVE-2018-8020

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 ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityNone

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Exploit Intelligence

4.20%probability of exploitation in 30 days

90thpercentile

Elevated risk: more likely to be exploited than 90% of all known CVEs.

References

Third-Party Advisory5

Other references8

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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.