Main Vulnerability Database Vulnerabilities #VU77755

Infinite loop in PyPDF - CVE-2023-36464

Published: June 28, 2023

Vulnerability identifier: #VU77755

CSH Severity: Medium

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2023-36464

CWE-ID: CWE-835

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to infinite loop if __parse_content_stream is executed. A remote attacker can consume all available system resources and cause denial of service conditions.

Affected software

PyPDF
IBM Watson Discovery for IBM Cloud Pak for Data

How to mitigate CVE-2023-36464

Install updates from vendor's website.

PyPDF - update to 3.9.0
IBM Watson Discovery for IBM Cloud Pak for Data - update to 4.8.4

External References

https://github.com/py-pdf/pypdf/pull/969
https://github.com/py-pdf/pypdf/pull/1828
https://github.com/py-pdf/pypdf/security/advisories/GHSA-4vvm-4w3v-6mr8

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