CVE-2018-5740 · cross-distro fix matrix

CVE-2018-5740: "deny-answer-aliases" is a little-used feature intended to help recursive server operators protect end users against DNS rebinding attacks, a potential method of circumventing the security model used by client browsers. However, a defect in this feature makes it easy, when the feature is in use, to

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

Fix per ecosystem

Each block below is a distro release where CVE-2018-5740 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

bind9→ fixed in1:9.11.4.P1+dfsg-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y bind9
```

Debian bookworm

Source: Debian Security Tracker

bind9→ fixed in1:9.11.4.P1+dfsg-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y bind9
```

Debian trixie

Source: Debian Security Tracker

bind9→ fixed in1:9.11.4.P1+dfsg-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y bind9
```

Alpine v3.20

Source: Alpine secdb

bind→ fixed in9.12.2_p1-r0
```
apk update && apk add --upgrade bind
```

Alpine v3.21

Source: Alpine secdb

bind→ fixed in9.12.2_p1-r0
```
apk update && apk add --upgrade bind
```

Alpine edge

Source: Alpine secdb

bind→ fixed in9.12.2_p1-r0
```
apk update && apk add --upgrade bind
```

Alpine v3.18

Source: Alpine secdb

bind→ fixed in9.12.2_p1-r0
```
apk update && apk add --upgrade bind
```

Alpine v3.19

Source: Alpine secdb

bind→ fixed in9.12.2_p1-r0
```
apk update && apk add --upgrade bind
```

Are YOU affected by CVE-2018-5740?

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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