CVE-2018-8020
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…
- 7.4HighCVSS base score
- 4.2%Exploitation in 30 daysEPSS · top 9.0% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By apache
- 5 months later
· 5 months later
Published
- 6 years later
· 6 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | High7.4 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |
- EPSS (exploitation in 30 days)
- 4.2% · top 9.0% of all CVEs (9 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.4.
Affected products
Apache Software Foundation · Apache Tomcat Native
- affected 1.2.0 to 1.2.16
- affected 1.1.23 to 1.1.34
References
13
- [www-announce] 20180721 [SECURITY] CVE-2018-8020 Apache Tomcat Native Connector - Mishandled OCSP responses can allow clients to authenticate with revoked certificates (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- RHSA-2018:2469 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- 104934 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- [debian-lts-announce] 20180822 [SECURITY] [DLA 1475-1] tomcat-native security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- RHSA-2018:2470 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- 1041507 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- [tomcat-dev] 20190319 svn commit: r1855831 [26/30] - in /tomcat/site/trunk: ./ docs/ xdocs/ (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [tomcat-dev] 20190325 svn commit: r1856174 [26/29] - in /tomcat/site/trunk: docs/ xdocs/ xdocs/stylesheets/ (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [tomcat-dev] 20200203 svn commit: r1873527 [26/30] - /tomcat/site/trunk/docs/ (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [tomcat-dev] 20200213 svn commit: r1873980 [31/34] - /tomcat/site/trunk/docs/ (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [rocketmq-dev] 20201224 [GitHub] [rocketmq] crazywen opened a new pull request #2517: fix CVE-2019-16869, CVE-2018-8020 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [rocketmq-dev] 20201224 [GitHub] [rocketmq] coveralls commented on pull request #2517: fix CVE-2019-16869, CVE-2018-8020 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [rocketmq-dev] 20201224 [GitHub] [rocketmq] codecov-io commented on pull request #2517: fix CVE-2019-16869, CVE-2018-8020 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2018-19721 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2018-8020)Record last updated .