CVE-2019-18840 · cross-distro fix matrix

CVE-2019-18840: In wolfSSL 4.1.0 through 4.2.0c, there are missing sanity checks of memory accesses in parsing ASN.1 certificate data while handshaking. Specifically, there is a one-byte heap-based buffer overflow inside the DecodedCert structure in GetName in wolfcrypt/src/asn.c because the domain name location in

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

Fix per ecosystem

Each block below is a distro release where CVE-2019-18840 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

wolfssl→ fixed in4.2.0+dfsg-3urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y wolfssl
```

Debian bookworm

Source: Debian Security Tracker

wolfssl→ fixed in4.2.0+dfsg-3urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y wolfssl
```

Debian trixie

Source: Debian Security Tracker

wolfssl→ fixed in4.2.0+dfsg-3urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y wolfssl
```

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