pypdf is a free and open-source pure-python PDF library. Prior to 6.15.0, a crafted PDF can cause large memory consumption when pypdf/_cmap.py function parse_bfrange parses unusually large source-code or destination-string tokens in a font /ToUnicode CMap during text extraction. This issue is fixed in 6.15.0.
Attack Parameters
Attack Vector
Local
Requires local access
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
Low
Partial disruption
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products
py-pdf:pypdf
References 4
https://github.com/py-pdf/pypdf/commit/afba8080e19d29a3c256a742b340995e695b35aa
security-advisories@github.com
https://github.com/py-pdf/pypdf/pull/3944
security-advisories@github.com
https://github.com/py-pdf/pypdf/releases/tag/6.15.0
security-advisories@github.com
https://github.com/py-pdf/pypdf/security/advisories/GHSA-fp3f-mc75-235c
security-advisories@github.com