CVE-2021-41079 · cross-distro fix matrix

CVE-2021-41079: 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.

Affects 3 Linux releases across 3 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2021-41079 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

tomcat9→ fixed in9.0.43-2~deb11u2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y tomcat9
```

Debian bookworm

Source: Debian Security Tracker

tomcat9→ fixed in9.0.53-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y tomcat9
```

Debian trixie

Source: Debian Security Tracker

tomcat9→ fixed in9.0.53-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y tomcat9
```

Are YOU affected by CVE-2021-41079?

5-second check on your actual server. Reads /etc/os-release, uname -r, and the distro's package manager; matches against this same cross-source index live.

curl https://mindsparkstack.com/scan.sh | bash

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Continuous monitoring beats manual checking

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