CVE-2021-25122: Apache Tomcat h2c request mix-up
This Apache advisory covers CVE-2021-25122 in Apache Tomcat.
- CVE-2021-25122
Key facts
- CISA KEV
- Not listed (catalogue checked )
- Affected
- Apache Tomcat Apache Tomcat 10 before 10.0.2; Apache Tomcat Apache Tomcat 9 before 9.0.42; Apache Tomcat Apache Tomcat 8.5 before 8.5.62
- Fixed in
- 10.0.2, 9.0.42, 8.5.62
- Source published
- Source revised
- Listed by VulniPulse
Compiled by VulniPulse from the linked sources. How records are collected and checked.
Affected products & platforms
Description
When responding to new h2c connection requests, Apache Tomcat versions 10.0.0-M1 to 10.0.0, 9.0.0.M1 to 9.0.41 and 8.5.0 to 8.5.61 could duplicate request headers and a limited amount of request body from one request to another meaning user A and user B could both see the results of user A's request.
Text from the source record.
- Apache Tomcat Apache Tomcat 10 before 10.0.2
- Apache Tomcat Apache Tomcat 9 before 9.0.42
- Apache Tomcat Apache Tomcat 8.5 before 8.5.62
Official advisory · medium-confidence parse· fetched ·verify at source
How to fix CVE-2021-25122
Upgrade to a fixed release named by Apache:
- 10.0.2
- 9.0.42
- 8.5.62
Support dates for the fixed release lines
- Apache Tomcat 10.0: support ended
- Apache Tomcat 9.0: support ends
- Apache Tomcat 8.5: support ended
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Apache Software Foundation advisories, March 2021All Apache Software Foundation advisories
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