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CVE-2022-0856· NVD / CVE Program· CNA fedora

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

Noroxi assessment

Priority: Monitor (action score 27/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 2.7% (FIRST EPSS); higher than 86% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. A user must open a link or visit a page. No special conditions are required; it is repeatable.
  • Fixed version: libcaca (Debian:14) 0.99.beta20-8; libcaca (SUSE:Linux Enterprise Module for Basesystem 15 SP3) 0.99.beta19.git20171003-150200.11.6.1; libcaca (SUSE:Linux Enterprise Software Development Kit 12 SP5) 0.99.beta18-14.9.1.

Low priority for now. Upgrade to libcaca (Debian:14) 0.99.beta20-8; libcaca (SUSE:Linux Enterprise Module for Basesystem 15 SP3) 0.99.beta19.git20171003-150200.11.6.1; libcaca (SUSE:Linux Enterprise Software Development Kit 12 SP5) 0.99.beta18-14.9.1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

MediumCVSS 6.5 · v3.1—No exploit Fix available
Published
Mar 10, 2022
Updated
Jun 17, 2026
EPSS
2.7% · 86th percentile

Report tools

JSON

Action score

27

Monitor

Low priority for now.

CVSS
26 / 40 · 6.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 2.7%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

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When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
libcaca projectlibcaca
fedoraprojectfedora

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • fedoraproject fedora37
  • fedoraproject fedora38
  • libcaca project libcaca0.99

Versions reported by the vendor

Affected version ranges reported by the assigning authority (fedora). Independent of NVD's CPE analysis and usually ahead of it.

  • n/a libcaca

    • libcaca - v0.99.beta20affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12libcacafrom 0—
Debian:14libcacabefore 0.99.beta20-80.99.beta20-8
SUSE:Linux Enterprise Module for Basesystem 15 SP3libcacabefore 0.99.beta19.git20171003-150200.11.6.10.99.beta19.git20171003-150200.11.6.1
SUSE:Linux Enterprise Module for Basesystem 15 SP3libcacabefore 0.99.beta19.git20171003-150200.11.6.10.99.beta19.git20171003-150200.11.6.1
SUSE:Linux Enterprise Software Development Kit 12 SP5libcacabefore 0.99.beta18-14.9.10.99.beta18-14.9.1

Same product

libcaca project: all records

Other highest-scoring records for the same primary product.

  • CVE-2018-20549There is an illegal WRITE memory access at caca/file.c (function caca_file_read) in libcaca 0.99.beta19.
    36Monitor
  • CVE-2018-20548There is an illegal WRITE memory access at common-image.c (function load_image) in libcaca 0.99.beta19 for 1bpp data.
    36Monitor
  • CVE-2018-20545There is an illegal WRITE memory access at common-image.c (function load_image) in libcaca 0.99.beta19 for 4bpp data.
    36Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2021-3410Feb 23, 2021 · A flaw was found in libcaca v0.99.beta19.
    31Monitor
  • ← EarlierCVE-2021-30498May 26, 2021 · A flaw was found in libcaca.
    31Monitor
  • ← EarlierCVE-2021-30499May 26, 2021 · A flaw was found in libcaca.
    31Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:libcaca0.99.beta20-8 · Debian:14Package registry (OSV)
opensuse:libcaca0.99.beta19.git20171003-150200.11.6.1 · openSUSE:Leap 15.3Package registry (OSV)
suse:libcaca0.99.beta19.git20171003-150200.11.6.1 · SUSE:Linux Enterprise Module for Basesystem 15 SP3Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-369 · Divide By Zero

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (2 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records