CVE-2019-3863 · cross-distro fix matrix

CVE-2019-3863: A flaw was found in libssh2 before 1.8.1 creating a vulnerability on the SSH client side. A server could send a multiple keyboard interactive response messages whose total length are greater than unsigned char max characters. This value is used by the SSH client as an index to copy memory causing in

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

Fix per ecosystem

Each block below is a distro release where CVE-2019-3863 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

libssh2→ fixed in1.8.0-2.1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libssh2
```

Debian bookworm

Source: Debian Security Tracker

libssh2→ fixed in1.8.0-2.1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libssh2
```

Debian trixie

Source: Debian Security Tracker

libssh2→ fixed in1.8.0-2.1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y libssh2
```

Alpine v3.20

Source: Alpine secdb

libssh2→ fixed in1.8.1-r0
```
apk update && apk add --upgrade libssh2
```

Alpine v3.21

Source: Alpine secdb

libssh2→ fixed in1.8.1-r0
```
apk update && apk add --upgrade libssh2
```

Alpine edge

Source: Alpine secdb

libssh2→ fixed in1.8.1-r0
```
apk update && apk add --upgrade libssh2
```

Alpine v3.18

Source: Alpine secdb

libssh2→ fixed in1.8.1-r0
```
apk update && apk add --upgrade libssh2
```

Alpine v3.19

Source: Alpine secdb

libssh2→ fixed in1.8.1-r0
```
apk update && apk add --upgrade libssh2
```

Are YOU affected by CVE-2019-3863?

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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