CVE-2023-42795
Apache Tomcat: Failure during request clean-up leads to sensitive data leaking to subsequent requests
Description
Incomplete Cleanup vulnerability in Apache Tomcat.When recycling various internal objects in Apache Tomcat from 11.0.0 through 11.0.0, from 10.1.0 through 10.1.13, from 9.0.0 through 9.0.80 and from 8.5.0 through 8.5.93, an error could cause Tomcat to skip some parts of the recycling process leading to information leaking from the current request/response to the next. Older, EOL versions may also be affected. Users are recommended to upgrade to version 11.0.0 onwards, 10.1.14 onwards, 9.0.81 onwards or 8.5.94 onwards, which fixes the issue.
How to fix CVE-2023-42795
To remediate CVE-2023-42795, upgrade the affected package to a fixed version below.
- —upgrade to 8.5.94 or later
- —upgrade to 10.1.6-1+deb12u1 or later
- —upgrade to 9.0.43-2~deb11u7 or later
- —upgrade to 10.1.14 or later
- —upgrade to 11.0.0-M12 or later
- —upgrade to 11.0.0-M12 or later
- —upgrade to 11.0.0-M12 or later
Is CVE-2023-42795 being exploited?
Low — EPSS is 2.2%, meaning exploitation activity has not been observed at scale.
Affected packages (7)
- >= 8.5.0, < 8.5.94, >= 9.0.1, < 9.0.81, >= 10.1.1, < 10.1.14
- from 0, < 10.1.6-1+deb12u1
- from 0, < 9.0.43-2~deb11u7
- >= 10.1.0-M1, < 10.1.14
- >= 11.0.0-M1, < 11.0.0-M12
- >= 11.0.0-M1, < 11.0.0-M12
- >= 11.0.0-M1, < 11.0.0-M12
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |