CVE-2018-20481 Information

Description

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.

CVSS Vector

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

Reference

http://www.securityfocus.com/bid/106321 https://access.redhat.com/errata/RHSA-2019:2022 https://access.redhat.com/errata/RHSA-2019:2713 https://gitlab.freedesktop.org/poppler/poppler/issues/692 https://gitlab.freedesktop.org/poppler/poppler/merge_requests/143 https://lists.debian.org/debian-lts-announce/2019/03/msg00008.html https://lists.debian.org/debian-lts-announce/2020/07/msg00018.html https://usn.ubuntu.com/3865-1/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

6.5