CVE-2017-3731 · cross-distro fix matrix

CVE-2017-3731: If an SSL/TLS server or client is running on a 32-bit host, and a specific cipher is being used, then a truncated packet can cause that server or client to perform an out-of-bounds read, usually resulting in a crash. For OpenSSL 1.1.0, the crash can be triggered when using CHACHA20/POLY1305; users s

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

Elevated exploitation risk

FIRST EPSS puts CVE-2017-3731's probability of exploitation in the next 30 days at 58% (99th percentile of all CVEs)— well above the noise floor. Prioritize it.

EPSS:58% · 30-day exploit probability99th percentile

Fix per ecosystem

Each block below is a distro release where CVE-2017-3731 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

openssl→ fixed in1.1.0d-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y openssl
```

Debian bookworm

Source: Debian Security Tracker

openssl→ fixed in1.1.0d-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y openssl
```

Debian trixie

Source: Debian Security Tracker

openssl→ fixed in1.1.0d-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y openssl
```

Are YOU affected by CVE-2017-3731?

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

Form-based quickscan View on NVD

Continuous monitoring beats manual checking

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