CVE-2018-20544: canonical ubuntu_linux Divide By Zero
CVSS: 6.5v3.0MediumModified
AliasesUBUNTU-CVE-2018-20544DEBIAN-CVE-2018-20544
Published 28-12-2018Last modified 05-08-2024
Vulnerability summary
CVE-2018-20544 is a medium (CVSS 6.5) Divide By Zero vulnerability in canonical ubuntu_linux. EPSS estimates a 1.87% chance of exploitation in the next 30 days, higher than 79% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
6.5/10
010
Medium · v3.0 (NVD)EPSS score
1.87%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1reference
Advisory lineage
Upstream 0 · Downstream 8 · Related 6Timeline
- 28-12-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
There is floating point exception at caca/dither.c (function caca_dither_bitmap) in libcaca 0.99.beta19.
CVSS metrics
4 scores · 3 sources · 2 versionsMedium 6.5Preferred score · NVD (NIST)
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated6.5MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated6.5MediumCVSS:3.0/AV:N/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
1.87%
Chance of exploitation in the next 30 days
Percentile
79%
Versus all other CVEs
30-day change
0.00 pp
From 1.87% on 19-09-2026
19-09-202619-10-2026
EPSS score1.87%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (bugzilla.redhat.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Debian2 products
- libcaca< 0.99.beta19-2.1
- debian_linuxEOL8.0
Canonical1 product
- ubuntu_linuxEOL12.04 | 14.04 | 16.04 | 18.04 | 18.10
Libcaca_project1 product
- libcaca0.99:beta19
Ubuntu1 product
- libcaca< 0.99.beta18-1ubuntu5.1 | < 0.99.beta19-2ubuntu0.16.04.1 | < 0.99.beta19-2ubuntu0.18.04.1
4 vendors · 5 products
References
11 links
lists.debian.org/debian-lts-announce/2019/01/msg00007.htmlMailing ListX Refsource MLISTThird Party Advisory- bugzilla.redhat.com/show_bug.cgi?id=1652627X Refsource MISCExploitIssue TrackingThird Party AdvisoryREPORT