Infinite Loop when a comment isn't followed by a character in pypdf
CVE-2023-36464
6.2MEDIUM
What is CVE-2023-36464?
pypdf is an open source, pure-python PDF library. In affected versions an attacker may craft a PDF which leads to an infinite loop if __parse_content_stream is executed. That is, for example, the case if the user extracted text from such a PDF. This issue was introduced in pull request #969 and resolved in pull request #1828. Users are advised to upgrade. Users unable to upgrade may modify the line while peek not in (b"\r", b"\n") in pypdf/generic/_data_structures.py to while peek not in (b"\r", b"\n", b"").
Affected Version(s)
pypdf pypdf: < 3.90 < pypdf: 3.90
pypdf PyPDF2: >= 2.2.0 >= PyPDF2: 2.2.0