DEBIAN-CVE-2020-21677

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Source
https://security-tracker.debian.org/tracker/CVE-2020-21677
Import Source
https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2020-21677.json
JSON Data
https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2020-21677
Upstream
Published
2021-08-10T21:15:07Z
Modified
2025-09-19T06:18:50Z
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

Debian:11 / libsixel

Package

Name
libsixel
Purl
pkg:deb/debian/libsixel?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.8.6-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:12 / libsixel

Package

Name
libsixel
Purl
pkg:deb/debian/libsixel?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.8.6-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / libsixel

Package

Name
libsixel
Purl
pkg:deb/debian/libsixel?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.8.6-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:14 / libsixel

Package

Name
libsixel
Purl
pkg:deb/debian/libsixel?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.8.6-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}