CVE-2017-11103 · cross-distro fix matrix

CVE-2017-11103: Heimdal before 7.4 allows remote attackers to impersonate services with Orpheus' Lyre attacks because it obtains service-principal names in a way that violates the Kerberos 5 protocol specification. In _krb5_extract_ticket() the KDC-REP service name must be obtained from the encrypted version stored

Affects 8 Linux releases across 11 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2017-11103 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

heimdal→ fixed in7.4.0.dfsg.1-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y heimdal
```
samba→ fixed in2:4.6.5+dfsg-4urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y samba
```

Debian bookworm

Source: Debian Security Tracker

heimdal→ fixed in7.4.0.dfsg.1-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y heimdal
```
samba→ fixed in2:4.6.5+dfsg-4urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y samba
```

Debian trixie

Source: Debian Security Tracker

heimdal→ fixed in7.4.0.dfsg.1-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y heimdal
```
samba→ fixed in2:4.6.5+dfsg-4urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y samba
```

Alpine v3.20

Source: Alpine secdb

heimdal→ fixed in7.4.0-r0
```
apk update && apk add --upgrade heimdal
```

Alpine v3.21

Source: Alpine secdb

heimdal→ fixed in7.4.0-r0
```
apk update && apk add --upgrade heimdal
```

Alpine edge

Source: Alpine secdb

heimdal→ fixed in7.4.0-r0
```
apk update && apk add --upgrade heimdal
```

Alpine v3.18

Source: Alpine secdb

heimdal→ fixed in7.4.0-r0
```
apk update && apk add --upgrade heimdal
```

Alpine v3.19

Source: Alpine secdb

heimdal→ fixed in7.4.0-r0
```
apk update && apk add --upgrade heimdal
```

Are YOU affected by CVE-2017-11103?

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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