NULL Pointer Dereference Affecting poppler-demos package, versions <0:0.26.5-38.el7


Severity

Recommended
medium

Based on CentOS security rating.

Threat Intelligence

EPSS
0.8% (83rd percentile)

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  • Snyk IDSNYK-CENTOS7-POPPLERDEMOS-2138184
  • published26 Jul 2021
  • disclosed20 Dec 2018

Introduced: 20 Dec 2018

CVE-2018-20481  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Centos:7 poppler-demos to version 0:0.26.5-38.el7 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream poppler-demos package and not the poppler-demos package as distributed by Centos. See How to fix? for Centos:7 relevant fixed versions and status.

XRef::getEntry in XRef.cc in Poppler 0.72.0 mishandles unallocated XRef entries, which allows remote attackers to cause a denial of service (NULL pointer dereference) via a crafted PDF document, when XRefEntry::setFlag in XRef.h is called from Parser::makeStream in Parser.cc.