CVE-2015-4000 · cross-distro fix matrix

CVE-2015-4000: The TLS protocol 1.2 and earlier, when a DHE_EXPORT ciphersuite is enabled on a server but not on a client, does not properly convey a DHE_EXPORT choice, which allows man-in-the-middle attackers to conduct cipher-downgrade attacks by rewriting a ClientHello with DHE replaced by DHE_EXPORT and then r

Affects 3 Linux releases across 6 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2015-4000 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

nss→ fixed in2:3.19.1-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y nss
```
openssl→ fixed in1.0.2b-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y openssl
```

Debian bookworm

Source: Debian Security Tracker

nss→ fixed in2:3.19.1-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y nss
```
openssl→ fixed in1.0.2b-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y openssl
```

Debian trixie

Source: Debian Security Tracker

nss→ fixed in2:3.19.1-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y nss
```
openssl→ fixed in1.0.2b-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y openssl
```

Are YOU affected by CVE-2015-4000?

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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