Vulnerability in Py-Pdf Pypdf
CVE-2023-46250
pypdf is a free and open-source pure-python PDF library. An attacker who uses a vulnerability present in versions 3.7.0 through 3.16.4 can craft a PDF which leads to an infinite loop. This infinite loop blocks the current process and can utilize a single core of the CPU by 100%. It does not affect memory usage. That is, for example, the case when the pypdf-user manipulates an incoming malicious PDF e.g. by merging it with another PDF or by adding annotations. The issue was fixed in version 3.17.0. As a workaround, apply the patch manually by modifying `pypdf/generic/_data_structures.py`.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.1 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.002 (13.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 14th percentile — 13.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Py-Pdf Pypdf — versions >= 3.7.0, < 3.17.0
- Pypdf Project
Weakness classification (CWE)
References
- github.com/py-pdf/pypdf/security/advisories/GHSA-wjcc-cq79-p63f (Vendor Advisory)
- github.com/py-pdf/pypdf/pull/2264 (Patch, Issue Tracking)
- github.com/py-pdf/pypdf/commit/9b23ac3c9619492570011d551d521690de9a3e2d (Patch)
Frequently asked questions
- What is CVE-2023-46250?
- CVE-2023-46250 is a medium-severity vulnerability in Py-Pdf Pypdf, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 5.1/10. Published 2023-10-31.
- How severe is CVE-2023-46250?
- Medium severity. CVSS v3 base score is 5.1 out of 10.