CVE-2018-20650

Publication date 1 January 2019

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

A reachable Object::dictLookup assertion in Poppler 0.72.0 allows attackers to cause a denial of service 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.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
poppler	18.10 cosmic	Fixed 0.68.0-0ubuntu1.4
	18.04 LTS bionic	Fixed 0.62.0-2ubuntu2.6
	16.04 LTS xenial	Fixed 0.41.0-0ubuntu1.11
	14.04 LTS trusty	Fixed 0.24.5-2ubuntu4.15

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
poppler	Upstream: de0c0b8

Severity score breakdown

Parameter	Value
Base score	6.5 · Medium
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

USN-3865-1
poppler vulnerabilities
22 January 2019