要点
- CVE-2023-36810 是影响 pypdf2, pypdf (py-pdf) 的中危 (CVSS 6.5)漏洞。
- 未来 30 天内被利用的概率（EPSS）：0.63%，高于 50.2% 的漏洞。
- 修复：升级到 1.27.9 或更高版本。
| Package | Affected versions | Patched versions |
|---|
| pypdf2 PyPI | < 1.27.9
| 1.27.9
|
| pypdf | ≤ 1.27.8
| No fix yet |
Description
Impact
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.
Patches
https://github.com/py-pdf/pypdf/pull/808
Workarounds
Is there a way for users to fix or remediate the vulnerability without upgrading?
References
NVD description
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. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Running one of these products? Scan your site to see whether it exposes a vulnerable version.
Scan my site free