Pillow is a Python imaging library. From 5.1.0 until 12.3.0, PdfParser.PdfStream.decode() in PIL/PdfParser.py calls zlib.decompress() with bufsize set to the PDF stream Length field without bounding the decompressed output size, allowing a crafted FlateDecode PDF stream to exhaust memory from a small file. This issue is fixed in version 12.3.0.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products 1
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Python Pillow
cpe:2.3:a:python:pillow:*:*:*:*:*:*:*:*
|
5.1.0
|
12.3.0
|
References 4
https://github.com/python-pillow/Pillow/commit/f7a31ea75e460e108c37126da1f47812…
security-advisories@github.com
https://github.com/python-pillow/Pillow/pull/9718
security-advisories@github.com
https://github.com/python-pillow/Pillow/releases/tag/12.3.0
security-advisories@github.com
https://github.com/python-pillow/Pillow/security/advisories/GHSA-jjj6-mw9f-p565
security-advisories@github.com