SB2018122602 - Denial of service in Poppler

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Main Vulnerability Database SB2018122602

SB2018122602 - Denial of service in Poppler

Published: December 26, 2018 Updated: February 1, 2023

Security Bulletin ID SB2018122602
Severity
Low
Patch available
YES
Number of vulnerabilities 4
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 4 secuirty vulnerabilities.


1) NULL pointer dereference (CVE-ID: CVE-2018-20481)

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

The vulnerability exists due to a NULL pointer dereference error when XRef::getEntry in XRef.cc mishandles unallocated XRef entries. A remote attacker can trigger denial of service conditions via a specially crafted PDF document, when XRefEntry::setFlag in XRef.h is called from Parser::makeStream in Parser.cc.


2) Reachable Assertion (CVE-ID: CVE-2018-20551)

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

The vulnerability exists due to reachable Object::getString assertion due to construction of invalid rich media annotation assets in the AnnotRichMedia class in Annot.c. A remote attacker can cause a denial of service.


3) Input validation error (CVE-ID: CVE-2018-20662)

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

The vulnerability exists due to a wrong return value from PDFDoc::setup when an xref data structure is mishandled during extractPDFSubtype processing. A remote attacker can trick the victim into opening a specially crafter PDF file cause application crash by Object.h SIGABRT.


4) Reachable Assertion (CVE-ID: CVE-2018-20650)

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

The vulnerability exists due to a reachable assertion due to the lack of a check for the dict data type, as demonstrated by use of the FileSpec class (in FileSpec.cc) in pdfdetach. A remote attacker can cause a denial of service.


Remediation

Install update from vendor's website.

References