Moderate severityNVD Advisory· Published Jun 27, 2023· Updated Dec 3, 2024
Infinite Loop when a comment isn't followed by a character in pypdf
CVE-2023-36464
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"").
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
pypdfPyPI | >= 3.1.0, < 3.9.0 | 3.9.0 |
PyPDF2PyPI | >= 2.2.0, <= 3.0.1 | — |
Affected products
3- ghsa-coords2 versions
>= 3.1.0, < 3.9.0+ 1 more
- (no CPE)range: >= 3.1.0, < 3.9.0
- (no CPE)range: >= 2.2.0, <= 3.0.1
Patches
Vulnerability mechanics
References
7- github.com/advisories/GHSA-4vvm-4w3v-6mr8ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2023-36464ghsaADVISORY
- github.com/py-pdf/pypdf/commit/b0e5c689df689ab173df84dacd77b6fc3c161932ghsaWEB
- github.com/py-pdf/pypdf/pull/1828ghsax_refsource_MISCWEB
- github.com/py-pdf/pypdf/pull/969ghsax_refsource_MISCWEB
- github.com/py-pdf/pypdf/releases/tag/3.9.0ghsaWEB
- github.com/py-pdf/pypdf/security/advisories/GHSA-4vvm-4w3v-6mr8ghsax_refsource_CONFIRMWEB
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