CVE-2021-41079
tomcat9 - security update
7.5
HIGH
CVSS 3.1
EPSS 0.10%
Description
Apache Tomcat 8.5.0 to 8.5.63, 9.0.0-M1 to 9.0.43 and 10.0.0-M1 to 10.0.2 did not properly validate incoming TLS packets. When Tomcat was configured to use NIO+OpenSSL or NIO2+OpenSSL for TLS, a specially crafted packet could be used to trigger an infinite loop resulting in a denial of service.
How to fix CVE-2021-41079
To remediate CVE-2021-41079, upgrade the affected package to a fixed version below.
- —upgrade to 8.5.64 or later
- —upgrade to 8.5.54-0+deb9u8 or later
- —upgrade to 9.0.43-2~deb11u2 or later
- —upgrade to 9.0.31-1~deb10u6 or later
- —upgrade to 10.0.4 or later
Is CVE-2021-41079 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (5)
- >= 8.5.0, < 8.5.64, >= 9.0.0, < 9.0.44, >= 10.0.0, < 10.0.3
- from 0, < 8.5.54-0+deb9u8
- from 0, < 9.0.43-2~deb11u2
- from 0, < 9.0.31-1~deb10u6
- >= 10.0.0, < 10.0.4
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:N/I:N/A:H |