CVSS: 6.5EPSS: 0%CPEs: 1EXPL: 2CVE-2023-36810 – Quadratic runtime with malformed PDF missing xref marker in pypdf
https://notcve.org/view.php?id=CVE-2023-36810
pypdf is a pure-python PDF library capable of splitting, merging, cropping, and transforming the pages of PDF files. An attacker who uses this vulnerability can craft a PDF which leads to unexpected long runtime. This quadratic runtime blocks the current process and can utilize a single core of the CPU by 100%. It does not affect memory usage. This issue has been addressed in PR 808 and versions from 1.27.9 include this fix. • https://github.com/py-pdf/pypdf/issues/582 https://github.com/py-pdf/pypdf/pull/808 https://github.com/py-pdf/pypdf/security/advisories/GHSA-jrm6-h9cq-8gqw https://lists.debian.org/debian-lts-announce/2023/07/msg00019.html • CWE-407: Inefficient Algorithmic Complexity •
CVSS: 6.2EPSS: 0%CPEs: 2EXPL: 1CVE-2023-36464 – Infinite Loop when a comment isn't followed by a character in pypdf
https://notcve.org/view.php?id=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. • https://github.com/py-pdf/pypdf/pull/1828 https://github.com/py-pdf/pypdf/pull/969 https://github.com/py-pdf/pypdf/security/advisories/GHSA-4vvm-4w3v-6mr8 • CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') •