CVE-2022-24859

PyPDF2 is an open source python PDF library capable of splitting, merging,
cropping, and transforming the pages of PDF files. In versions prior to
1.27.5 an attacker who uses this vulnerability can craft a PDF which leads
to an infinite loop if the PyPDF2 if the code attempts to get the content
stream. The reason is that the last while-loop in
ContentStream._readInlineImage only terminates when it finds the EI
token, but never actually checks if the stream has already ended. This
issue has been resolved in version 1.27.5. Users unable to upgrade should
validate and PDFs prior to iterating over their content stream.

Bugs

• <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1009879&gt;