CVE-2016-3739 · cross-distro fix matrix

CVE-2016-3739: The (1) mbed_connect_step1 function in lib/vtls/mbedtls.c and (2) polarssl_connect_step1 function in lib/vtls/polarssl.c in cURL and libcurl before 7.49.0, when using SSLv3 or making a TLS connection to a URL that uses a numerical IP address, allow remote attackers to spoof servers via an arbitrary

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

Fix per ecosystem

Each block below is a distro release where CVE-2016-3739 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

curl→ fixed in7.50.1-1urgency: unimportant

sudo apt-get install --only-upgrade -y curl

Debian bookworm

Source: Debian Security Tracker

curl→ fixed in7.50.1-1urgency: unimportant

sudo apt-get install --only-upgrade -y curl

Debian trixie

Source: Debian Security Tracker

curl→ fixed in7.50.1-1urgency: unimportant

sudo apt-get install --only-upgrade -y curl

Are YOU affected by CVE-2016-3739?

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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