CVE-2024-31497 · cross-distro fix matrix

CVE-2024-31497: In PuTTY 0.68 through 0.80 before 0.81, biased ECDSA nonce generation allows an attacker to recover a user's NIST P-521 secret key via a quick attack in approximately 60 signatures. This is especially important in a scenario where an adversary is able to read messages signed by PuTTY or Pageant. The

Affects 8 Linux releases across 9 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2024-31497 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

putty→ fixed in0.74-1+deb11u2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y putty
```

Debian bookworm

Source: Debian Security Tracker

putty→ fixed in0.78-2+deb12u2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y putty
```

Debian trixie

Source: Debian Security Tracker

filezilla→ fixed in3.67.0-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y filezilla
```
putty→ fixed in0.81-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y putty
```

Alpine v3.20

Source: Alpine secdb

putty→ fixed in0.81-r0
```
apk update && apk add --upgrade putty
```

Alpine v3.21

Source: Alpine secdb

putty→ fixed in0.81-r0
```
apk update && apk add --upgrade putty
```

Alpine edge

Source: Alpine secdb

putty→ fixed in0.81-r0
```
apk update && apk add --upgrade putty
```

Alpine v3.18

Source: Alpine secdb

putty→ fixed in0.81-r0
```
apk update && apk add --upgrade putty
```

Alpine v3.19

Source: Alpine secdb

putty→ fixed in0.81-r0
```
apk update && apk add --upgrade putty
```

Are YOU affected by CVE-2024-31497?

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.

curl https://mindsparkstack.com/scan.sh | bash

Form-based quickscan View on NVD

Continuous monitoring beats manual checking

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