CVE-2020-21677

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Source
https://cve.org/CVERecord?id=CVE-2020-21677
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-21677.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2020-21677
Downstream
Published
2021-08-10T21:15:07.447Z
Modified
2026-07-09T02:58:37.052857Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

A heap-based buffer overflow in the sixelencoderoutputwithoutmacro function in encoder.c of Libsixel 1.8.4 allows attackers to cause a denial of service (DOS) via converting a crafted PNG file into Sixel format.

References

Affected packages

Git / github.com/saitoha/libsixel

Affected ranges

Type
GIT
Repo
https://github.com/saitoha/libsixel
Events
Introduced
686d234ae20f97b9d816d4147ba3f4b90dbae72e
Last affected
686d234ae20f97b9d816d4147ba3f4b90dbae72e
Database specific 
{
    "cpe": "cpe:2.3:a:saitoha:libsixel:1.8.4:*:*:*:*:*:*:*",
    "source": "CPE_STRING",
    "extracted_events": [
        {
            "introduced": "1.8.4"
        },
        {
            "last_affected": "1.8.4"
        }
    ]
}

Affected versions

1.*
1.8.4
v1.*
v1.8.4

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2020-21677.json"