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CVE-2019-11873 · cross-distro fix matrix

CVE-2019-11873: wolfSSL 4.0.0 has a Buffer Overflow in DoPreSharedKeys in tls13.c when a current identity size is greater than a client identity size. An attacker sends a crafted hello client packet over the network to a TLSv1.3 wolfSSL server. The length fields of the packet: record length, client hello length, to

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

Fix per ecosystem

Each block below is a distro release where CVE-2019-11873 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

  • wolfssl→ fixed in4.1.0+dfsg-1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y wolfssl

Debian bookworm

Source: Debian Security Tracker

  • wolfssl→ fixed in4.1.0+dfsg-1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y wolfssl

Debian trixie

Source: Debian Security Tracker

  • wolfssl→ fixed in4.1.0+dfsg-1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y wolfssl
Are YOU affected by CVE-2019-11873?

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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