CVE-2015-8023 · cross-distro fix matrix

CVE-2015-8023: The server implementation of the EAP-MSCHAPv2 protocol in the eap-mschapv2 plugin in strongSwan 4.2.12 through 5.x before 5.3.4 does not properly validate local state, which allows remote attackers to bypass authentication via an empty Success message in response to an initial Challenge message.

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

Fix per ecosystem

Each block below is a distro release where CVE-2015-8023 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

strongswan→ fixed in5.3.3-3urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y strongswan
```

Debian bookworm

Source: Debian Security Tracker

strongswan→ fixed in5.3.3-3urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y strongswan
```

Debian trixie

Source: Debian Security Tracker

strongswan→ fixed in5.3.3-3urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y strongswan
```

Are YOU affected by CVE-2015-8023?

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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