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Fencer Intel
medium 6.5

CVE-2018-20544 json

There is floating point exception at caca/dither.c (function caca_dither_bitmap) in libcaca 0.99.beta19.

published 7y ago modified 4mo ago also EUVD-2018-13098

cvss
6.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.9%
EPSS 1.9% chance of exploitation in 30 days, percentile 79%
public exploits
0
none known

Summary

There is floating point exception at caca/dither.c (function caca_dither_bitmap) in libcaca 0.99.beta19.

Patch / fix

  • libcaca Debian 14, Debian 13, Debian 12 0.99.beta19-2.1

debian advisories DEBIAN-CVE-2018-20544

  • libcaca Ubuntu 14.04 LTS 0.99.beta18-1ubuntu5.1
  • libcaca Ubuntu 16.04 LTS 0.99.beta19-2ubuntu0.16.04.1
  • libcaca Ubuntu 18.04 LTS 0.99.beta19-2ubuntu0.18.04.1

ubuntu advisories UBUNTU-CVE-2018-20544

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • libcaca SLES 12 SP5, SLES 12 SP4, SLED 12 SP4 +4 more 0.99.beta18-14.3.27
  • libcaca SLE Module for Server Applications 15 0.99.beta19.git20171003-3.3.7

suse advisories SUSE-SU-2019:2745-2SUSE-SU-2019:2745-1SUSE-SU-2019:0770-1

  • libcaca openSUSE Tumbleweed 0.99.beta19.git20171003-8.3
  • libcaca openSUSE Leap 15.0 0.99.beta19.git20171003-lp150.2.3.1

opensuse advisories openSUSE-SU-2024:10927-1openSUSE-SU-2019:1144-1

  • libcaca Alpine 3.24, Alpine 3.23, Alpine 3.22 +12 more 0.99_beta19-r3

alpine advisories ALPINE-CVE-2018-20544

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Is CVE-2018-20544 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-20544 updated cvss 4.0

libcaca: floating point exception in caca/dither.c

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.87% chance of exploitation in the next 30 days, higher than 79% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=1652627 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 6.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.