CVE-2021-20243: debian debian_linux Divide By Zero
CVSS: 5.5v3.1MediumModified
AliasesUBUNTU-CVE-2021-20243DEBIAN-CVE-2021-20243CGA-22c7-6wm5-82cxCGA-6cvm-m5gq-hjhh
Published 09-03-2021Last modified 03-08-2024
Vulnerability summary
CVE-2021-20243 is a medium (CVSS 5.5) Divide By Zero vulnerability in debian debian_linux. EPSS estimates a 1.07% chance of exploitation in the next 30 days, higher than 64.1% of scored vulnerabilities.
CVSS score
5.5/10
010
Medium · v3.1 (NVD)EPSS score
1.07%
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 12 · Related 10Timeline
- 09-03-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
A flaw was found in ImageMagick in MagickCore/resize.c. An attacker who submits a crafted file that is processed by ImageMagick could trigger undefined behavior in the form of math division by zero. The highest threat from this vulnerability is to system availability.
CVSS metrics
5 scores · 4 sources · 2 versionsMedium 5.5Preferred score · NVD (NIST)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HSourcesAll 4 agree
- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- OSV · ChainguardEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Medium 4.3Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
1.07%
Chance of exploitation in the next 30 days
Percentile
64%
Versus all other CVEs
30-day change
0.00 pp
From 1.07% on 18-09-2026
18-09-202618-10-2026
EPSS score1.07%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Debian2 products
- imagemagick< 8:6.9.11.60+dfsg-1.5
- debian_linuxEOL9.0
Chainguard1 product
- imagemagick-6All versions (No fix recorded)
Imagemagick1 product
- imagemagick< 7.0.10-62
Ubuntu1 product
- imagemagick< 8:6.7.7.10-6ubuntu3.13+esm3 | < 8:6.8.9.9-7ubuntu5.16+esm2 | < 8:6.9.7.4+dfsg-16ubuntu6.14 | < 8:6.9.10.23+dfsg-2.1ubuntu11.9 | < 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.1+esm1
4 vendors · 5 products
