CVE-2009-3720 · cross-distro fix matrix

CVE-2009-3720: The updatePosition function in lib/xmltok_impl.c in libexpat in Expat 2.0.1, as used in Python, PyXML, w3c-libwww, and other software, allows context-dependent attackers to cause a denial of service (application crash) via an XML document with crafted UTF-8 sequences that trigger a buffer over-read,

Affects 3 Linux releases across 41 (distro × package) combinations.

Fix per ecosystem

Each block below is a distro release where CVE-2009-3720 has a known fix. Run the listed command on that distro to remediate.

Debian bullseye

Source: Debian Security Tracker

audacity→ fixed in1.3.2-1urgency: unimportant

sudo apt-get install --only-upgrade -y audacity

cmake→ fixed in2.6.0-6urgency: unimportant

sudo apt-get install --only-upgrade -y cmake

expat→ fixed in2.0.1-5urgency: low

sudo apt-get install --only-upgrade -y expat

gdcm→ fixed in2.0.14-2urgency: low

sudo apt-get install --only-upgrade -y gdcm

ghostscript→ fixed in8.71~dfsg-2urgency: unimportant
```
sudo apt-get install --only-upgrade -y ghostscript
```

mcabber→ fixed in0.10.0-1urgency: low

sudo apt-get install --only-upgrade -y mcabber

paraview→ fixed in3.6.2-1urgency: unimportant

sudo apt-get install --only-upgrade -y paraview

poco→ fixed in1.3.6p1-1urgency: unimportant
```
sudo apt-get install --only-upgrade -y poco
```

simgear→ fixed in2.10.0-1urgency: unimportant

sudo apt-get install --only-upgrade -y simgear

tdom→ fixed in0.8.3~20080525-1urgency: low

sudo apt-get install --only-upgrade -y tdom

tla→ fixed in1.3.5+dfsg-15urgency: unimportant
```
sudo apt-get install --only-upgrade -y tla
```

udunits→ fixed in2.1.8-4urgency: unimportant

sudo apt-get install --only-upgrade -y udunits

xmlrpc-c→ fixed in1.06.27-1.1urgency: low

sudo apt-get install --only-upgrade -y xmlrpc-c

xotcl→ fixed in1.6.5-1.2urgency: low

sudo apt-get install --only-upgrade -y xotcl

Debian bookworm

Source: Debian Security Tracker

audacity→ fixed in1.3.2-1urgency: unimportant

sudo apt-get install --only-upgrade -y audacity

cmake→ fixed in2.6.0-6urgency: unimportant

sudo apt-get install --only-upgrade -y cmake

expat→ fixed in2.0.1-5urgency: low

sudo apt-get install --only-upgrade -y expat

gdcm→ fixed in2.0.14-2urgency: low

sudo apt-get install --only-upgrade -y gdcm

ghostscript→ fixed in8.71~dfsg-2urgency: unimportant
```
sudo apt-get install --only-upgrade -y ghostscript
```

mcabber→ fixed in0.10.0-1urgency: low

sudo apt-get install --only-upgrade -y mcabber

paraview→ fixed in3.6.2-1urgency: unimportant

sudo apt-get install --only-upgrade -y paraview

poco→ fixed in1.3.6p1-1urgency: unimportant
```
sudo apt-get install --only-upgrade -y poco
```

simgear→ fixed in2.10.0-1urgency: unimportant

sudo apt-get install --only-upgrade -y simgear

tdom→ fixed in0.8.3~20080525-1urgency: low

sudo apt-get install --only-upgrade -y tdom

tla→ fixed in1.3.5+dfsg-15urgency: unimportant
```
sudo apt-get install --only-upgrade -y tla
```

udunits→ fixed in2.1.8-4urgency: unimportant

sudo apt-get install --only-upgrade -y udunits

xmlrpc-c→ fixed in1.06.27-1.1urgency: low

sudo apt-get install --only-upgrade -y xmlrpc-c

xotcl→ fixed in1.6.5-1.2urgency: low

sudo apt-get install --only-upgrade -y xotcl

Debian trixie

Source: Debian Security Tracker

audacity→ fixed in1.3.2-1urgency: unimportant

sudo apt-get install --only-upgrade -y audacity

cmake→ fixed in2.6.0-6urgency: unimportant

sudo apt-get install --only-upgrade -y cmake

expat→ fixed in2.0.1-5urgency: low

sudo apt-get install --only-upgrade -y expat

gdcm→ fixed in2.0.14-2urgency: low

sudo apt-get install --only-upgrade -y gdcm

ghostscript→ fixed in8.71~dfsg-2urgency: unimportant
```
sudo apt-get install --only-upgrade -y ghostscript
```

mcabber→ fixed in0.10.0-1urgency: low

sudo apt-get install --only-upgrade -y mcabber

paraview→ fixed in3.6.2-1urgency: unimportant

sudo apt-get install --only-upgrade -y paraview

poco→ fixed in1.3.6p1-1urgency: unimportant
```
sudo apt-get install --only-upgrade -y poco
```

simgear→ fixed in2.10.0-1urgency: unimportant

sudo apt-get install --only-upgrade -y simgear

tdom→ fixed in0.8.3~20080525-1urgency: low

sudo apt-get install --only-upgrade -y tdom

udunits→ fixed in2.1.8-4urgency: unimportant

sudo apt-get install --only-upgrade -y udunits

xmlrpc-c→ fixed in1.06.27-1.1urgency: low

sudo apt-get install --only-upgrade -y xmlrpc-c

xotcl→ fixed in1.6.5-1.2urgency: low

sudo apt-get install --only-upgrade -y xotcl

Are YOU affected by CVE-2009-3720?

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

CVE-2009-3720dropped silently in your distro's update channel. Every new CVE is the same story. StackPatch runs the matcher hourly against all 5 sources and emails the exact remediation when something new applies to one of your servers. $99 lifetime, 50 founder seats, 30-day refund.

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