CVE-2015-4171 · cross-distro fix matrix

CVE-2015-4171: strongSwan 4.3.0 through 5.x before 5.3.2 and strongSwan VPN Client before 1.4.6, when using EAP or pre-shared keys for authenticating an IKEv2 connection, does not enforce server authentication restrictions until the entire authentication process is complete, which allows remote servers to obtain c

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

Fix per ecosystem

Each block below is a distro release where CVE-2015-4171 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

strongswan→ fixed in5.3.1-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y strongswan
```

Debian bookworm

Source: Debian Security Tracker

strongswan→ fixed in5.3.1-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y strongswan
```

Debian trixie

Source: Debian Security Tracker

strongswan→ fixed in5.3.1-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y strongswan
```

Are YOU affected by CVE-2015-4171?

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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