CVE-2012-3547 · cross-distro fix matrix

CVE-2012-3547: Stack-based buffer overflow in the cbtls_verify function in FreeRADIUS 2.1.10 through 2.1.12, when using TLS-based EAP methods, allows remote attackers to cause a denial of service (server crash) and possibly execute arbitrary code via a long "not after" timestamp in a client certificate.

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

EPSS:5.7% · 30-day exploit probability92th percentile

Fix per ecosystem

Each block below is a distro release where CVE-2012-3547 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

freeradius→ fixed in2.1.12+dfsg-1.1urgency: medium
```
sudo apt-get install --only-upgrade -y freeradius
```

Debian bookworm

Source: Debian Security Tracker

freeradius→ fixed in2.1.12+dfsg-1.1urgency: medium
```
sudo apt-get install --only-upgrade -y freeradius
```

Debian trixie

Source: Debian Security Tracker

freeradius→ fixed in2.1.12+dfsg-1.1urgency: medium
```
sudo apt-get install --only-upgrade -y freeradius
```

Are YOU affected by CVE-2012-3547?

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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