CVE-2020-21050: Libsixel prior to v1.8.3 contains a stack buffer overflow in the function gif_process_raster at fromgif.c

Medium severity · published Sep 14, 2021

CVE-2020-21050

Libsixel prior to v1.8.3 contains a stack buffer overflow in the function gif_process_raster at fromgif.c

6.5

CVSS

1.6%

EPSS

On KEV

Description

Libsixel prior to v1.8.3 contains a stack buffer overflow in the function gif_process_raster at fromgif.c.

CVSS vector

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

Attack vector

Network

Complexity

Low

Privileges

None

User interaction

Required

Confidentiality

None

Integrity

None

Availability

High

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)1.6% · higher than 75% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

Libsixel · Saitoha

before 1.8.3 · source: NVD

Affected product

Libsixel

Saitoha

All Libsixel CVEs

References

NVD

https://nvd.nist.gov/vuln/detail/CVE-2020-21050

CVE.org

https://www.cve.org/CVERecord?id=CVE-2020-21050

Broken Link

https://bitbucket.org/netbsd/pkgsrc/commits/a27113e21179cbfbfae0c35f6a9edd6aa498faae

Technical Description

https://cwe.mitre.org/data/definitions/121.html

Release Notes

https://github.com/saitoha/libsixel/blob/master/ChangeLog

Patch

https://github.com/saitoha/libsixel/commit/7808a06b88c11dbc502318cdd51fa374f8cd47ee

Exploit

https://github.com/saitoha/libsixel/issues/75

Release Notes

https://github.com/saitoha/libsixel/releases/tag/v1.8.5