CVE-2018-18409 · cross-distro fix matrix

CVE-2018-18409: A stack-based buffer over-read exists in setbit() at iptree.h of TCPFLOW 1.5.0, due to received incorrect values causing incorrect computation, leading to denial of service during an address_histogram call or a get_histogram call.

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

Fix per ecosystem

Each block below is a distro release where CVE-2018-18409 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

tcpflow→ fixed in1.5.2+repack1-1urgency: unimportant
```
sudo apt-get install --only-upgrade -y tcpflow
```

Debian bookworm

Source: Debian Security Tracker

tcpflow→ fixed in1.5.2+repack1-1urgency: unimportant
```
sudo apt-get install --only-upgrade -y tcpflow
```

Debian trixie

Source: Debian Security Tracker

tcpflow→ fixed in1.5.2+repack1-1urgency: unimportant
```
sudo apt-get install --only-upgrade -y tcpflow
```

Alpine v3.20

Source: Alpine secdb

tcpflow→ fixed in1.5.0-r1
```
apk update && apk add --upgrade tcpflow
```

Alpine v3.21

Source: Alpine secdb

tcpflow→ fixed in1.5.0-r1
```
apk update && apk add --upgrade tcpflow
```

Alpine edge

Source: Alpine secdb

tcpflow→ fixed in1.5.0-r1
```
apk update && apk add --upgrade tcpflow
```

Alpine v3.18

Source: Alpine secdb

tcpflow→ fixed in1.5.0-r1
```
apk update && apk add --upgrade tcpflow
```

Alpine v3.19

Source: Alpine secdb

tcpflow→ fixed in1.5.0-r1
```
apk update && apk add --upgrade tcpflow
```

Are YOU affected by CVE-2018-18409?

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.

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