7.8

CVE-2021-20309: debian debian_linux Divide By Zero

CVSS: 7.8v2.0HighModified
AliasesUBUNTU-CVE-2021-20309DEBIAN-CVE-2021-20309
Published 11-05-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-20309 is a high (CVSS 7.8) Divide By Zero vulnerability in debian debian_linux. EPSS estimates a 2.31% chance of exploitation in the next 30 days, higher than 83.1% of scored vulnerabilities.

Overall risk
32/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.8/10
010
High · v2.0 (NVD)
EPSS score
2.31%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 11 · Related 8
DLA-2672-1DLA-3429-1MGASA-2022-0446OPENSUSE-SU-2021:0606-1SUSE-SU-2021:1276-1SUSE-SU-2021:1277-1

Timeline

  1. 11-05-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

A flaw was found in ImageMagick in versions before 7.0.11 and before 6.9.12, where a division by zero in WaveImage() of MagickCore/visual-effects.c may trigger undefined behavior via a crafted image file submitted to an application using ImageMagick. The highest threat from this vulnerability is to system availability.

CVSS metrics

4 scores · 3 sources · 2 versions

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 19-09-2026

19-09-202619-10-2026
EPSS score
2.31%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian2 products
Imagemagick1 product
Ubuntu1 product
  • imagemagick< 8:6.7.7.10-6ubuntu3.13+esm1 | < 8:6.8.9.9-7ubuntu5.16+esm1 | < 8:6.9.7.4+dfsg-16ubuntu6.12 | < 8:6.9.10.23+dfsg-2.1ubuntu11.9 | < 8:6.9.11.60+dfsg-1.3ubuntu0.22.04.1+esm1

3 vendors · 4 products

References

10 links