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Fencer Intel
medium 6.5

CVE-2022-0856 json

libcaca is affected by a Divide By Zero issue via img2txt, which allows a remote malicious user to cause a Denial of Service

published 4y ago modified 4mo ago also EUVD-2022-15899

cvss
6.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.8%
EPSS 2.8% chance of exploitation in 30 days, percentile 86%
public exploits
0
none known

Summary

libcaca is affected by a Divide By Zero issue via img2txt, which allows a remote malicious user to cause a Denial of Service

Patch / fix

  • libcaca Debian 14 0.99.beta20-8

debian advisories DEBIAN-CVE-2022-0856

  • libcaca Ubuntu 22.04 LTS 0.99.beta19-2.2ubuntu4.1
  • libcaca Ubuntu 24.04 LTS 0.99.beta20-4ubuntu0.1
  • libcaca Ubuntu 25.10 0.99.beta20-5ubuntu0.25.10.1
  • libcaca Ubuntu Pro 14.04 LTS 0.99.beta18-1ubuntu5.1+esm3
  • libcaca Ubuntu Pro 16.04 LTS 0.99.beta19-2ubuntu0.16.04.2+esm2
  • libcaca Ubuntu Pro 18.04 LTS 0.99.beta19-2ubuntu0.18.04.3+esm1
  • libcaca Ubuntu Pro 20.04 LTS 0.99.beta19-2.1ubuntu1.20.04.2+esm1

ubuntu advisories UBUNTU-CVE-2022-0856

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 for SAP 12 SP5, SLES 12 SP5, SLE Software Development Kit 12 SP5 0.99.beta18-14.9.1
  • libcaca SLE Real Time 15 SP2, SLE Module for Basesystem 15 SP3, openSUSE Leap 15.4 +1 more 0.99.beta19.git20171003-150200.11.6.1

suse advisories SUSE-SU-2022:1508-1SUSE-SU-2022:1476-1

Is CVE-2022-0856 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-2022-0856 updated cvss 5.0

libcaca: Divide by zero in img2txt

  • 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

2.75% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/cacalabs/libcaca/issues/65 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 6.5 CVSS:3.1/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

Affected products

  • n/a libcaca

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.