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.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - 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.
    (CVE-2023-36810)

The remote Ubuntu 16.04 ESM / 18.04 ESM / 20.04 LTS / 22.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-6280-1 advisory.

    It was discovered that PyPDF2 incorrectly handled PDF files with certain markers. If a user or automated     system were tricked into processing a specially crafted file, an attacker could possibly use this issue to     consume system resources, resulting in a denial of service.

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Debian 10 host has packages installed that are affected by a vulnerability as referenced in the dla-3497 advisory.

    - -------------------------------------------------------------------------     Debian LTS Advisory DLA-3497-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                          Adrian Bunk     July 14, 2023                                 https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : pypdf2     Version        : 1.26.0-2+deb10u2     CVE ID         : CVE-2023-36810

    Quadratic runtime with malformed PDFs missing xref marker has been fixed     in PyPDF2, a pure Python PDF library.

    For Debian 10 buster, this problem has been fixed in version     1.26.0-2+deb10u2.

    We recommend that you upgrade your pypdf2 packages.

    For the detailed security status of pypdf2 please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/pypdf2

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Type	Severity
416570	SCA: security update for PyPDF2 (GHSA-jrm6-h9cq-8gqw)	Tenable Cloud Security	SCA Checks	Local	medium
416570	SCA: security update for PyPDF2 (GHSA-jrm6-h9cq-8gqw)	Tenable Self-Hosted Container Security	SCA Checks	Local	medium
179652	Ubuntu 16.04 ESM / 18.04 ESM / 20.04 LTS / 22.04 LTS : PyPDF2 vulnerability (USN-6280-1)	Nessus	Ubuntu Local Security Checks	Local	medium
178322	Debian dla-3497 : python-pypdf2 - security update	Nessus	Debian Local Security Checks	Local	medium

Detections

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CVE-2023-36810

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