CVE-2013-4366 · cross-distro fix matrix

CVE-2013-4366: http/impl/client/HttpClientBuilder.java in Apache HttpClient 4.3.x before 4.3.1 does not ensure that X509HostnameVerifier is not null, which allows attackers to have unspecified impact via vectors involving hostname verification.

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

Fix per ecosystem

Each block below is a distro release where CVE-2013-4366 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

httpcomponents-client→ fixed in4.3.2-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y httpcomponents-client
```

Debian bookworm

Source: Debian Security Tracker

httpcomponents-client→ fixed in4.3.2-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y httpcomponents-client
```

Debian trixie

Source: Debian Security Tracker

httpcomponents-client→ fixed in4.3.2-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y httpcomponents-client
```

Are YOU affected by CVE-2013-4366?

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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