Pillow is a Python imaging library. From 11.0.0 until 13.0.0, Exif.load() in src/PIL/Image.py repeatedly slices the remaining EXIF data while it begins with the six-byte Exif header. src/PIL/PngImagePlugin.py accepts an uncapped PNG eXIf chunk, so a file filled with repeated headers causes a new shrinking copy on every iteration and quadratic CPU work. The condition is reachable through Image.getexif(), Image._getexif(), and ImageOps.exif_transpose(), including common photo-upload rotation workflows.
This issue is fixed in version 13.0.0.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
Passive
Minimal interaction
Impact Assessment
Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products 1
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Python Pillow
cpe:2.3:a:python:pillow:*:*:*:*:*:*:*:*
|
11.0.0
|
13.0.0
|
References 4
https://github.com/python-pillow/Pillow/commit/806e38381c781f32bbd22f4cd026678a…
security-advisories@github.com
https://github.com/python-pillow/Pillow/pull/10073
security-advisories@github.com
https://github.com/python-pillow/Pillow/releases/tag/13.0.0
security-advisories@github.com
https://github.com/python-pillow/Pillow/security/advisories/GHSA-g4qv-2jxx-769h
security-advisories@github.com