DEBIAN-CVE-2020-21677

See a problem?
Please try reporting it to the source first.
Source
https://security-tracker.debian.org/tracker/CVE-2020-21677
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2020-21677.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2020-21677
Upstream
Published
2021-08-10T21:15:07Z
Modified
2025-09-30T03:54:34Z
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

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"
}