CVE-2023-36807
MEDIUM6.2EPSS 0.10%PyPDF2 vulnerable to possible Infinite Loop when reading malformed objects
描述
pypdf is a pure-python PDF library capable of splitting, merging, cropping, and transforming the pages of PDF files. In version 2.10.5 an attacker who uses this vulnerability 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 if the user extracted metadata from such a malformed PDF. Versions prior to 2.10.5 throw an error, but do not hang forever. This issue was fixed with https://github.com/py-pdf/pypdf/pull/1331 which has been included in release 2.10.6. Users are advised to upgrade. Users unable to upgrade should modify `PyPDF2/generic/_data_structures.py::read_object` to an an error throwing case. See GHSA-hm9v-vj3r-r55m for details.
受影響套件(2)
- Debian/pypdf2from 0, < 2.10.7-1
- PyPI/pypdf2>= 2.10.5, < 2.10.6
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.2 | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
參考連結(7)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2023-36807
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2023-36807
- PATCHhttps://github.com/py-pdf/pypdf
- WEBhttps://github.com/py-pdf/pypdf/commit/e6531a25325e7e0174b6a1ba03b57320b5227f6b
- WEBhttps://github.com/py-pdf/pypdf/issues/1329
- WEBhttps://github.com/py-pdf/pypdf/pull/1331
- WEBhttps://github.com/py-pdf/pypdf/security/advisories/GHSA-hm9v-vj3r-r55m