CVE-2023-36464
6.2 · MEDIUMOverview
CVE-2023-36464 is a medium-severity vulnerability affecting pypdf_project pypdf. It was published on June 27, 2023 and has a CVSS 3.1 base score of 6.2 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 6.2, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
Technical Description
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"")`.
Remediation
Check the references section for vendor advisories and patches from pypdf_project. Update pypdf to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| pypdf_project | pypdf | >= 0, < 3.9.0 | Affected |
| pypdf2_project | pypdf2 | 2.2.0 | Affected |
References
Frequently Asked Questions
What is CVE-2023-36464?
CVE-2023-36464 is a medium-severity vulnerability affecting pypdf_project pypdf. It was published on June 27, 2023 and has a CVSS 3.1 base score of 6.2 (MEDIUM).
How severe is CVE-2023-36464?
This vulnerability has a CVSS 3.1 base score of 6.2, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2023-36464?
Check the references section for vendor advisories and patches from pypdf_project. Update pypdf to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2023-36464?
CyberStrike's AI-powered security agents can automatically detect CVE-2023-36464 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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