Описание
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.
| Релиз | Статус | Примечание |
|---|---|---|
| bionic | not-affected | 1.26.0-2 |
| devel | not-affected | 2.12.1-3 |
| esm-apps/bionic | not-affected | 1.26.0-2ubuntu0.1~esm2 |
| esm-apps/focal | not-affected | 1.26.0-3ubuntu1.20.04.1 |
| esm-apps/jammy | not-affected | 1.26.0-4ubuntu0.22.04.1 |
| esm-apps/xenial | not-affected | 1.25.1-1ubuntu0.1~esm2 |
| focal | not-affected | 1.26.0-3ubuntu1.20.04.1 |
| jammy | not-affected | 1.26.0-4ubuntu0.22.04.1 |
| kinetic | ignored | end of life, was needs-triage |
| lunar | not-affected | 2.12.1-3 |
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6.2 Medium
CVSS3
Связанные уязвимости
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.
pypdf is a pure-python PDF library capable of splitting, merging, crop ...
PyPDF2 vulnerable to possible Infinite Loop when reading malformed objects
Уязвимость библиотеки для обработки PDF PyPDF2, связанная с выполнением цикла с недоступным условием выхода, позволяющая нарушителю вызвать отказ в обслуживании
6.2 Medium
CVSS3