CVE-2013-4206 · cross-distro fix matrix

CVE-2013-4206: Heap-based buffer underflow in the modmul function in sshbn.c in PuTTY before 0.63 allows remote SSH servers to cause a denial of service (crash) and possibly trigger memory corruption or code execution via a crafted DSA signature, which is not properly handled when performing certain bit-shifting o

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

Fix per ecosystem

Each block below is a distro release where CVE-2013-4206 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

filezilla→ fixed in3.7.3-1urgency: low

sudo apt-get install --only-upgrade -y filezilla

putty→ fixed in0.63-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y putty
```

Debian bookworm

Source: Debian Security Tracker

filezilla→ fixed in3.7.3-1urgency: low

sudo apt-get install --only-upgrade -y filezilla

putty→ fixed in0.63-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y putty
```

Debian trixie

Source: Debian Security Tracker

filezilla→ fixed in3.7.3-1urgency: low

sudo apt-get install --only-upgrade -y filezilla

putty→ fixed in0.63-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y putty
```

Are YOU affected by CVE-2013-4206?

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