pypdf: CVE-2023-36464

Debian Bug report logs - #1040338
pypdf: CVE-2023-36464

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Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: Salvatore Bonaccorso <carnil@debian.org>

To: Debian Bug Tracking System <submit@bugs.debian.org>

Subject: pypdf: CVE-2023-36464

Date: Tue, 04 Jul 2023 17:34:34 +0200

Source: pypdf
Version: 3.4.1-1
Severity: important
Tags: security upstream
X-Debbugs-Cc: carnil@debian.org, Debian Security Team <team@security.debian.org>
Control: clone -1 -2
Control: reassign -2 src:pypdf2 2.12.1-3
Control: retitle -2 pypdf2: CVE-2023-36464

Hi,

The following vulnerability was published for pypdf.

CVE-2023-36464[0]:
| pypdf is an open source, pure-python PDF library. In affected
| versions an attacker may craft a PDF which leads to an infinite loop
| if `__parse_content_stream` is executed. That is, for example, the
| case if the user extracted text from such a PDF. This issue was
| introduced in pull request #969 and resolved in pull request #1828.
| Users are advised to upgrade. Users unable to upgrade may modify the
| line `while peek not in (b"\r", b"\n")` in
| `pypdf/generic/_data_structures.py` to `while peek not in (b"\r",
| b"\n", b"")`.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2023-36464
    https://www.cve.org/CVERecord?id=CVE-2023-36464
[1] https://github.com/py-pdf/pypdf/security/advisories/GHSA-4vvm-4w3v-6mr8
[2] https://github.com/py-pdf/pypdf/pull/1828
[3] https://github.com/py-pdf/pypdf/commit/b0e5c689df689ab173df84dacd77b6fc3c161932

Regards,
Salvatore

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