CVE-2018-20650: canonical ubuntu_linux Improper Input Validation
CVSS: 6.5v3.1MediumModified
AliasesUBUNTU-CVE-2018-20650DEBIAN-CVE-2018-20650
Published 01-01-2019Last modified 05-08-2024
Vulnerability summary
CVE-2018-20650 is a medium (CVSS 6.5) Improper Input Validation vulnerability in canonical ubuntu_linux. EPSS estimates a 2.68% chance of exploitation in the next 30 days, higher than 85.5% of scored vulnerabilities.
CVSS score
6.5/10
010
Medium · v3.1 (NVD)EPSS score
2.68%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 11 · Related 5Timeline
- 01-01-2019PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
5 scores · 3 sources · 3 versionsMedium 6.5Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Medium 6.5Preferred score · OSV · Ubuntu (Ecosystem advisory) · calculated from vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HSourcesSingle source
Medium 4.3Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
2.68%
Chance of exploitation in the next 30 days
Percentile
86%
Versus all other CVEs
30-day change
0.00 pp
From 2.68% on 18-09-2026
18-09-202618-10-2026
EPSS score2.68%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Redhat7 products
- enterprise_linux8.0
- enterprise_linux_desktop7.0
- enterprise_linux_eus8.1 | 8.2 | 8.4 | 8.6
- enterprise_linux_server7.0
- enterprise_linux_server_aus8.2 | 8.4 | 8.6
Debian2 products
- poppler< 0.85.0-2
- debian_linuxEOL8.0 | 9.0 | 10.0
Canonical1 product
- ubuntu_linuxEOL14.04 | 16.04 | 18.04 | 18.10
Freedesktop1 product
- poppler0.72.0
Ubuntu1 product
- poppler< 0.24.5-2ubuntu4.15 | < 0.41.0-0ubuntu1.11 | < 0.62.0-2ubuntu2.6
5 vendors · 12 products
References
13 links- gitlab.freedesktop.org/poppler/poppler/issues/704X Refsource MISCIssue TrackingPatchThird Party AdvisoryREPORT
- gitlab.freedesktop.org/poppler/poppler/commit/de0c0b8324e776f0b851485e0fc9622fc35695b7X Refsource MISCPatchThird Party Advisory
lists.debian.org/debian-lts-announce/2019/09/msg00033.htmlMailing ListX Refsource MLISTThird Party Advisory- lists.debian.org/debian-lts-announce/2020/11/msg00014.htmlMailing ListX Refsource MLISTThird Party Advisory
- lists.debian.org/debian-lts-announce/2022/09/msg00030.htmlMailing ListX Refsource MLISTThird Party Advisory