#VU36557 Input validation error in QPDF - CVE-2018-18020

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Main Vulnerability Database Vulnerabilities #VU36557

#VU36557 Input validation error in QPDF - CVE-2018-18020

Published: October 6, 2018 / Updated: August 8, 2020


Vulnerability identifier: #VU36557
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2018-18020
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
QPDF
Software vendor:
SourceForge

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

In QPDF 8.2.1, in libqpdf/QPDFWriter.cc, QPDFWriter::unparseObject and QPDFWriter::unparseChild have recursive calls for a long time, which allows remote attackers to cause a denial of service via a crafted PDF file.


Remediation

Install update from vendor's website.

External links