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CVE-2019-18678 · cross-distro fix matrix

CVE-2019-18678: An issue was discovered in Squid 3.x and 4.x through 4.8. It allows attackers to smuggle HTTP requests through frontend software to a Squid instance that splits the HTTP Request pipeline differently. The resulting Response messages corrupt caches (between a client and Squid) with attacker-controlled

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

Fix per ecosystem

Each block below is a distro release where CVE-2019-18678 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

  • squid→ fixed in4.9-1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y squid

Debian bookworm

Source: Debian Security Tracker

  • squid→ fixed in4.9-1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y squid

Debian trixie

Source: Debian Security Tracker

  • squid→ fixed in4.9-1urgency: not yet assigned
    sudo apt-get install --only-upgrade -y squid
Are YOU affected by CVE-2019-18678?

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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