CVE-2019-15903 · cross-distro fix matrix

CVE-2019-15903: In libexpat before 2.2.8, crafted XML input could fool the parser into changing from DTD parsing to document parsing too early; a consecutive call to XML_GetCurrentLineNumber (or XML_GetCurrentColumnNumber) then resulted in a heap-based buffer over-read.

Affects 8 Linux releases across 26 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2019-15903 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

expat→ fixed in2.2.7-2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y expat
```
firefox-esr→ fixed in68.2.0esr-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y firefox-esr
```
thunderbird→ fixed in1:68.2.1-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y thunderbird
```

Debian bookworm

Source: Debian Security Tracker

expat→ fixed in2.2.7-2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y expat
```
firefox-esr→ fixed in68.2.0esr-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y firefox-esr
```
thunderbird→ fixed in1:68.2.1-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y thunderbird
```

Debian trixie

Source: Debian Security Tracker

expat→ fixed in2.2.7-2urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y expat
```
firefox-esr→ fixed in68.2.0esr-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y firefox-esr
```
thunderbird→ fixed in1:68.2.1-1urgency: not yet assigned
```
sudo apt-get install --only-upgrade -y thunderbird
```

Alpine v3.20

Source: Alpine secdb

expat→ fixed in2.2.7-r1
```
apk update && apk add --upgrade expat
```

firefox-esr→ fixed in68.2.0-r0

apk update && apk add --upgrade firefox-esr

firefox→ fixed in70.0-r0
```
apk update && apk add --upgrade firefox
```

Alpine v3.21

Source: Alpine secdb

expat→ fixed in2.2.7-r1
```
apk update && apk add --upgrade expat
```

firefox-esr→ fixed in68.2.0-r0

apk update && apk add --upgrade firefox-esr

firefox→ fixed in70.0-r0
```
apk update && apk add --upgrade firefox
```

librewolf→ fixed in70.0-r0

apk update && apk add --upgrade librewolf

Alpine edge

Source: Alpine secdb

expat→ fixed in2.2.7-r1
```
apk update && apk add --upgrade expat
```

firefox-esr→ fixed in68.2.0-r0

apk update && apk add --upgrade firefox-esr

firefox→ fixed in70.0-r0
```
apk update && apk add --upgrade firefox
```

librewolf→ fixed in70.0-r0

apk update && apk add --upgrade librewolf

Alpine v3.18

Source: Alpine secdb

expat→ fixed in2.2.7-r1
```
apk update && apk add --upgrade expat
```

firefox-esr→ fixed in68.2.0-r0

apk update && apk add --upgrade firefox-esr

firefox→ fixed in70.0-r0
```
apk update && apk add --upgrade firefox
```

Alpine v3.19

Source: Alpine secdb

expat→ fixed in2.2.7-r1
```
apk update && apk add --upgrade expat
```

firefox-esr→ fixed in68.2.0-r0

apk update && apk add --upgrade firefox-esr

firefox→ fixed in70.0-r0
```
apk update && apk add --upgrade firefox
```

Are YOU affected by CVE-2019-15903?

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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