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CVE-2021-44718 · cross-distro fix matrix

CVE-2021-44718: wolfSSL through 5.0.0 allows an attacker to cause a denial of service and infinite loop in the client component by sending crafted traffic from a Machine-in-the-Middle (MITM) position. The root cause is that the client module accepts TLS messages that normally are only sent to TLS servers.

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

Fix per ecosystem

Each block below is a distro release where CVE-2021-44718 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

  • wolfssl→ fixed in4.6.0+p1-0+deb11u1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y wolfssl

Debian bookworm

Source: Debian Security Tracker

  • wolfssl→ fixed in5.1.1-1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y wolfssl

Debian trixie

Source: Debian Security Tracker

  • wolfssl→ fixed in5.1.1-1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y wolfssl
Are YOU affected by CVE-2021-44718?

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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