UBUNTU-CVE-2023-36464

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UBUNTU-CVE-2023-36464

Summary:

Details: 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"")`.

References: https://ubuntu.com/security/CVE-2023-36464, https://github.com/py-pdf/pypdf/pull/969, https://github.com/py-pdf/pypdf/pull/1828, https://github.com/py-pdf/pypdf/security/advisories/GHSA-4vvm-4w3v-6mr8, https://www.cve.org/CVERecord?id=CVE-2023-36464