CVE-2018-16749: canonical ubuntu_linux NULL Pointer Dereference
CVSS: 6.5v3.1MediumModified
AliasesUBUNTU-CVE-2018-16749DEBIAN-CVE-2018-16749
Published 09-09-2018Last modified 05-08-2024
Vulnerability summary
CVE-2018-16749 is a medium (CVSS 6.5) NULL Pointer Dereference vulnerability in canonical ubuntu_linux. EPSS estimates a 2.31% chance of exploitation in the next 30 days, higher than 83% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
6.5/10
010
Medium · v3.1 (NVD)EPSS score
2.31%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github
Advisory lineage
Upstream 0 · Downstream 8 · Related 4Timeline
- 09-09-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
In ImageMagick 7.0.7-29 and earlier, a missing NULL check in ReadOneJNGImage in coders/png.c allows an attacker to cause a denial of service (WriteBlob assertion failure and application exit) via a crafted file.
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
2.31%
Chance of exploitation in the next 30 days
Percentile
83%
Versus all other CVEs
30-day change
0.00 pp
From 2.31% on 18-09-2026
18-09-202618-10-2026
EPSS score2.31%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundImagemagick
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Debian2 products
- imagemagick< 8:6.9.10.2+dfsg-2
- debian_linuxEOL8.0 | 9.0
Canonical1 product
- ubuntu_linuxEOL14.04 | 16.04 | 18.04
Imagemagick1 product
- imagemagick< 6.9.9-42 | ≥ 7.0.0-0, ≤ 7.0.7-29
Ubuntu1 product
- imagemagick< 8:6.7.7.10-6ubuntu3.13 | < 8:6.8.9.9-7ubuntu5.13 | < 8:6.9.7.4+dfsg-16ubuntu6.4
4 vendors · 5 products
References
9 links- github.com/ImageMagick/ImageMagick6/commit/1007b98f8795ad4bea6bc5f68a32d83e982fdae4X Refsource MISCPatchThird Party Advisory
lists.debian.org/debian-lts-announce/2018/10/msg00002.htmlMailing ListX Refsource MLISTThird Party Advisory- github.com/ImageMagick/ImageMagick/issues/1119X Refsource MISCExploitIssue TrackingPatchThird Party AdvisoryREPORT
- lists.debian.org/debian-lts-announce/2020/09/msg00007.htmlMailing ListX Refsource MLISTThird Party Advisory