CVE-2021-3336 · cross-distro fix matrix

CVE-2021-3336: DoTls13CertificateVerify in tls13.c in wolfSSL before 4.7.0 does not cease processing for certain anomalous peer behavior (sending an ED22519, ED448, ECC, or RSA signature without the corresponding certificate). The client side is affected because man-in-the-middle attackers can impersonate TLS 1.3

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

Fix per ecosystem

Each block below is a distro release where CVE-2021-3336 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

wolfssl→ fixed in4.6.0-3urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y wolfssl
```

Debian bookworm

Source: Debian Security Tracker

wolfssl→ fixed in4.6.0-3urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y wolfssl
```

Debian trixie

Source: Debian Security Tracker

wolfssl→ fixed in4.6.0-3urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y wolfssl
```

Are YOU affected by CVE-2021-3336?

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.

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