CVE-2022-3437 · cross-distro fix matrix

CVE-2022-3437: A heap-based buffer overflow vulnerability was found in Samba within the GSSAPI unwrap_des() and unwrap_des3() routines of Heimdal. The DES and Triple-DES decryption routines in the Heimdal GSSAPI library allow a length-limited write buffer overflow on malloc() allocated memory when presented with a

Affects 8 Linux releases across 16 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2022-3437 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

heimdal→ fixed in7.7.0+dfsg-2+deb11u2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y heimdal
```
samba→ fixed in2:4.13.13+dfsg-1~deb11u6urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y samba
```

Debian bookworm

Source: Debian Security Tracker

heimdal→ fixed in7.8.git20221115.a6cf945+dfsg-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y heimdal
```
samba→ fixed in2:4.16.6+dfsg-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y samba
```

Debian trixie

Source: Debian Security Tracker

heimdal→ fixed in7.8.git20221115.a6cf945+dfsg-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y heimdal
```
samba→ fixed in2:4.16.6+dfsg-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y samba
```

Alpine v3.20

Source: Alpine secdb

heimdal→ fixed in7.7.1-r0
```
apk update && apk add --upgrade heimdal
```
samba→ fixed in4.16.6-r0
```
apk update && apk add --upgrade samba
```

Alpine v3.21

Source: Alpine secdb

heimdal→ fixed in7.7.1-r0
```
apk update && apk add --upgrade heimdal
```
samba→ fixed in4.16.6-r0
```
apk update && apk add --upgrade samba
```

Alpine edge

Source: Alpine secdb

heimdal→ fixed in7.7.1-r0
```
apk update && apk add --upgrade heimdal
```
samba→ fixed in4.16.6-r0
```
apk update && apk add --upgrade samba
```

Alpine v3.18

Source: Alpine secdb

heimdal→ fixed in7.7.1-r0
```
apk update && apk add --upgrade heimdal
```
samba→ fixed in4.16.6-r0
```
apk update && apk add --upgrade samba
```

Alpine v3.19

Source: Alpine secdb

heimdal→ fixed in7.7.1-r0
```
apk update && apk add --upgrade heimdal
```
samba→ fixed in4.16.6-r0
```
apk update && apk add --upgrade samba
```

Are YOU affected by CVE-2022-3437?

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

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