CVE-2023-34981
Apache Tomcat vulnerable to information leak
7.5
HIGH
CVSS 3.1
EPSS 0.27%
Description
A regression in the fix for bug 66512 in Apache Tomcat 11.0.0-M5, 10.1.8, 9.0.74 and 8.5.88 meant that, if a response did not include any HTTP headers no AJP SEND_HEADERS messare woudl be sent for the response which in turn meant that at least one AJP proxy (mod_proxy_ajp) would use the response headers from the previous request leading to an information leak.
How to fix CVE-2023-34981
To remediate CVE-2023-34981, upgrade the affected package to a fixed version below.
- —upgrade to 8.5.89 or later
- —upgrade to 10.1.10-1 or later
- —upgrade to 11.0.0-M6 or later
- —upgrade to 8.5.89 or later
Is CVE-2023-34981 being exploited?
Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.
Affected packages (4)
- >= 8.5.88, < 8.5.89, >= 9.0.74, < 9.0.75, >= 10.1.8, < 10.1.9
- from 0, < 10.1.10-1
- >= 11.0.0-M5, < 11.0.0-M6
- >= 8.5.88, < 8.5.89
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |