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Security Advisories: GSA_kwCzR0hTQS14Y2p4LW0ycGotOGc3Oc0_pw

Manipulated inline images can cause Infinite Loop in PyPDF2

Impact

An attacker who uses this vulnerability can craft a PDF which leads to an infinite loop if the PyPDF2 user wrote the following code:

from PyPDF2 import PdfFileReader, PdfFileWriter
from PyPDF2.pdf import ContentStream

reader = PdfFileReader("malicious.pdf", strict=False)
for page in reader.pages:
    ContentStream(page.getContents(), reader)

Patches

PyPDF2==1.27.5 and later are patched.

Credits to Sebastian Krause for finding (issue) and fixing (PR) it.

Permalink: https://github.com/advisories/GHSA-xcjx-m2pj-8g79
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS14Y2p4LW0ycGotOGc3Oc0_pw
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: about 2 years ago
Updated: 11 months ago

CVSS Score: 6.2
CVSS vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Identifiers: GHSA-xcjx-m2pj-8g79, CVE-2022-24859
References:

• https://github.com/py-pdf/PyPDF2/security/advisories/GHSA-xcjx-m2pj-8g79
• https://nvd.nist.gov/vuln/detail/CVE-2022-24859
• https://github.com/py-pdf/PyPDF2/issues/329
• https://github.com/py-pdf/PyPDF2/pull/740
• https://github.com/py-pdf/PyPDF2/releases/tag/1.27.5
• https://github.com/pypa/advisory-database/tree/main/vulns/pypdf2/PYSEC-2022-194.yaml
• https://lists.debian.org/debian-lts-announce/2022/06/msg00001.html
• https://lists.debian.org/debian-lts-announce/2023/06/msg00013.html
• https://github.com/advisories/GHSA-xcjx-m2pj-8g79

Repository: https://github.com/py-pdf/PyPDF2
Blast Radius: 19.9

Affected Packages