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TI-2018-05797 Aliases CVE-2018-8020GHSA-r94v-7v68-9rjq

Improper certificate validation in Apache Tomcat Native

Priority LOW 39CWE-295Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Spoofing
Confidentiality · integrity · availability
High · High · None
Fix status
Partial Red Hat: 3 fixed, 1 without a fix

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-295.

Summary

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.

Why it matters now

EPSS 0.0418 90th percentileScored 2026-11-07
Fix Partial Red Hat: 2 advisoriesRed Hat: 3 fixed, 1 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
ApacheApache Tomcat Native1.2.0 to 1.2.16; 1.1.23 to 1.1.34—No fix listedCNA
  • Apache Tomcat Native VendorApache Affected 1.2.0 to 1.2.16; 1.1.23 to 1.1.34 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
cpe:2.3:a:apache:tomcat_native:*:*:*:*:*:*:*:*1.1.23 – 1.1.34; 1.2.0 – 1.2.16VulnerableApache
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
  • cpe:2.3:a:apache:tomcat_native:*:*:*:*:*:*:*:* Versions 1.1.23 – 1.1.34; 1.2.0 – 1.2.16 Vulnerable ·Apache

Remediation

Red Hat 2 advisories

  • RHSA-2018:2469 Released 2018-08-16 · Red Hat rating Important
    Red Hat JBoss Web Server 3.1.0 Service Pack 4 security and bug fix update
    • Red Hat JBoss Web Server 3.1 for RHEL 6 tomcat-native-1.2.17-17.redhat_17.ep7.el6, tomcat7-7.0.70-27.ep7.el6, tomcat7-admin-webapps-7.0.70-27.ep7.el6 +22
    • Red Hat JBoss Web Server 3.1 for RHEL 7 tomcat-native-1.2.17-17.redhat_17.ep7.el7, tomcat7-7.0.70-27.ep7.el7, tomcat7-admin-webapps-7.0.70-27.ep7.el7 +22
  • RHSA-2018:2470 Released 2018-08-16 · Red Hat rating Important
    Red Hat JBoss Web Server 3.1.0 Service Pack 4 security and bug fix update
    • Red Hat JBoss Web Server 3.1

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat JBoss Enterprise Web Server 2AffectedNo fix planned: Will not fix
Red Hat JBoss Web Server 3.1Fixed RHSA-2018:2470
Red Hat JBoss Web Server 3.1 for RHEL 6Fixed RHSA-2018:2469
Red Hat JBoss Web Server 3.1 for RHEL 7Fixed RHSA-2018:2469
Not affected: 2 products
  • Red Hat JBoss Enterprise Application Platform 5
  • Red Hat JBoss Enterprise Application Platform 6

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-8020
  2. 2026-10-03 Alias added: GHSA-r94v-7v68-9rjq

References

Advisory 3

Other 8

  • TI-2026-59033 Apache Tomcat Native: Insecure OpenSSL options enabled CVSS 3.1CRITICAL 9.1
  • TI-2026-23283 Apache Tomcat, Apache Tomcat Native: OCSP checks sometimes soft-fail even when soft-fail is disabled CVSS 3.1CRITICAL 9.1
  • TI-2026-59030 Apache Tomcat Native: DoS via TLS handshake CVSS 3.1HIGH 7.5
  • TI-2018-05796 Improper certificate validation in Apache Tomcat Native CVSS 3.0HIGH 7.4
  • TI-2026-59034 Apache Tomcat Native: Client certificate requirements can be down-graded CVSS 3.1HIGH 7.4
  • TI-2026-19939 Apache Tomcat Native, Apache Tomcat: OCSP revocation bypass CVSS 3.1HIGH 7.5
See all 7 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences