CVE-2018-20650

Name: CVE-2018-20650
Creator: NVD / NIST
Published: 2019-01-01T16:29:00.233+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 2.68%

Last modified Jun 17, 2026

CVE-2018-20650 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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.. EPSS estimates a 2.68% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

6.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS Probability

2.68%

83.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Freedesktop	Poppler	0.72.0
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	18.04
Canonical	Ubuntu Linux	18.10
Debian	Debian Linux	8.0
Debian	Debian Linux	9.0
Debian	Debian Linux	10.0
Redhat	Enterprise Linux	8.0
Redhat	Enterprise Linux Desktop	7.0
Redhat	Enterprise Linux Eus	8.1
Redhat	Enterprise Linux Eus	8.2
Redhat	Enterprise Linux Eus	8.4
Redhat	Enterprise Linux Eus	8.6
Redhat	Enterprise Linux Server	7.0
Redhat	Enterprise Linux Server Aus	8.2
Redhat	Enterprise Linux Server Aus	8.4
Redhat	Enterprise Linux Server Aus	8.6
Redhat	Enterprise Linux Server Tus	8.2
Redhat	Enterprise Linux Server Tus	8.4
Redhat	Enterprise Linux Server Tus	8.6
Redhat	Enterprise Linux Workstation	7.0

References

http://www.securityfocus.com/bid/106459Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2019:2022Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2713Third Party Advisory
https://gitlab.freedesktop.org/poppler/poppler/commit/de0c0b8324e776f0b851485e0fc9622fc35695b7Patch, Third Party Advisory
https://gitlab.freedesktop.org/poppler/poppler/issues/704Issue Tracking, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/09/msg00033.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/11/msg00014.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/09/msg00030.htmlMailing List, Third Party Advisory
https://usn.ubuntu.com/3865-1/Third Party Advisory
http://www.securityfocus.com/bid/106459Third Party Advisory, VDB Entry
https://access.redhat.com/errata/RHSA-2019:2022Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2713Third Party Advisory
https://gitlab.freedesktop.org/poppler/poppler/commit/de0c0b8324e776f0b851485e0fc9622fc35695b7Patch, Third Party Advisory
https://gitlab.freedesktop.org/poppler/poppler/issues/704Issue Tracking, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/09/msg00033.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/11/msg00014.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/09/msg00030.htmlMailing List, Third Party Advisory
https://usn.ubuntu.com/3865-1/Third Party Advisory

Timeline

Published: Jan 1, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-20650?

How severe is CVE-2018-20650?

CVE-2018-20650 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 2.68% probability of exploitation in the next 30 days.

How do I fix CVE-2018-20650?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-20650?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST