What’s Vulnerable › Vulnerabilities
CVE-2018-8020
- Severity: high (CVSS 7.4 v3.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 4.1% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2018-07-31 · updated 2026-06-17
- Weakness: CWE-295
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.
Affected products
- Apache Software Foundation Apache Tomcat Native: from 1.1.23 through 1.1.34; from 1.2.0 through 1.2.16
- Debian Linux: 8.0
References
- http://mail-archives.us.apache.org/mod_mbox/www-announce/201807.mbox/%3C20180721101944.GA45239%40minotaur.apache.org%3E
- http://www.securityfocus.com/bid/104934
- http://www.securitytracker.com/id/1041507
- https://access.redhat.com/errata/RHSA-2018:2469
- https://access.redhat.com/errata/RHSA-2018:2470
- https://lists.apache.org/thread.html/ba661b0edd913b39ff129a32d855620dd861883ade05fd88a8ce517d%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/f8e0814e11c7f21f42224b6de111cb3f5e5ab5c15b78924c516d4ec2%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/r831e0548fad736a98140d0b3b7dc575af0c50faea0b266434ba813cc%40%3Cdev.rocketmq.apache.org%3E
- https://lists.apache.org/thread.html/rb25b42f666d2cac5e6e6b3f771faf60d1f1aa58073dcdd8db14edf8a%40%3Cdev.rocketmq.apache.org%3E
- https://lists.apache.org/thread.html/rcddf723a4b4117f8ed6042e9ac25e8c5110a617bab77694b61b14833%40%3Cdev.rocketmq.apache.org%3E
- https://lists.apache.org/thread.html/re3b72cbb13e1dfe85c4a06959a3b6ca6d939b407ecca80db12b54220%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/rf8e8c091182b45daa50d3557cad9b10bb4198e3f08cf8f1c66a1b08d%40%3Cdev.tomcat.apache.org%3E
Get alerted when CVE-2018-8020 or the next vulnerability affects your stack