Linux Distros Unpatched Vulnerability : CVE-2018-18020

low Nessus Plugin ID 222017

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Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

- 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. (CVE-2018-18020)

Note that Nessus relies on the presence of the package as reported by the vendor.

Solution

There is no known solution at this time.

Plugin Details

Severity: Low

ID: 222017

File Name: unpatched_CVE_2018_18020.nasl

Version: 1.4

Type: local

Agent: unix

Family: Misc.

Published: 3/4/2025

Updated: 9/4/2025

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 2.2

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.4

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P

CVSS Score Source: CVE-2018-18020

CVSS v3

Risk Factor: Low

Base Score: 3.3

Temporal Score: 3

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:qpdf-libs, p-cpe:/a:redhat:enterprise_linux:qpdf-doc, p-cpe:/a:centos:centos:qpdf, p-cpe:/a:centos:centos:qpdf-doc, cpe:/o:centos:centos:8, p-cpe:/a:centos:centos:qpdf-libs, cpe:/o:redhat:enterprise_linux:8, p-cpe:/a:redhat:enterprise_linux:qpdf

Required KB Items: Host/local_checks_enabled, Host/cpu, global_settings/vendor_unpatched, Host/OS/identifier

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 10/6/2018

Reference Information

CVE: CVE-2018-18020

Detections

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