6.5
MEDIUM
CVE-2020-21050
Libsixel GIF Stack Buffer Overflow Vulnerability
Description

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

INFO

Published Date :

Sept. 14, 2021, 4:15 p.m.

Last Modified :

Sept. 20, 2022, 8:56 p.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

2.8
Affected Products

The following products are affected by CVE-2020-21050 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Libsixel_project libsixel
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2020-21050.

URL Resource
https://bitbucket.org/netbsd/pkgsrc/commits/a27113e21179cbfbfae0c35f6a9edd6aa498faae Broken Link
https://cwe.mitre.org/data/definitions/121.html Technical Description
https://github.com/saitoha/libsixel/blob/master/ChangeLog Release Notes Third Party Advisory
https://github.com/saitoha/libsixel/commit/7808a06b88c11dbc502318cdd51fa374f8cd47ee Patch Third Party Advisory
https://github.com/saitoha/libsixel/issues/75 Exploit Issue Tracking Patch Third Party Advisory
https://github.com/saitoha/libsixel/releases/tag/v1.8.5 Release Notes Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2020-21050 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2020-21050 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Modified Analysis by [email protected]

    Sep. 20, 2022

    Action Type Old Value New Value
    Changed Reference Type https://cwe.mitre.org/data/definitions/121.html No Types Assigned https://cwe.mitre.org/data/definitions/121.html Technical Description
  • CVE Modified by [email protected]

    Jul. 10, 2022

    Action Type Old Value New Value
    Added Reference https://cwe.mitre.org/data/definitions/121.html [No Types Assigned]
  • CWE Remap by [email protected]

    Jun. 28, 2022

    Action Type Old Value New Value
    Changed CWE CWE-119 CWE-787
  • Initial Analysis by [email protected]

    Sep. 24, 2021

    Action Type Old Value New Value
    Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism
    Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:N/I:N/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
    Changed Reference Type https://bitbucket.org/netbsd/pkgsrc/commits/a27113e21179cbfbfae0c35f6a9edd6aa498faae No Types Assigned https://bitbucket.org/netbsd/pkgsrc/commits/a27113e21179cbfbfae0c35f6a9edd6aa498faae Broken Link
    Changed Reference Type https://github.com/saitoha/libsixel/blob/master/ChangeLog No Types Assigned https://github.com/saitoha/libsixel/blob/master/ChangeLog Release Notes, Third Party Advisory
    Changed Reference Type https://github.com/saitoha/libsixel/commit/7808a06b88c11dbc502318cdd51fa374f8cd47ee No Types Assigned https://github.com/saitoha/libsixel/commit/7808a06b88c11dbc502318cdd51fa374f8cd47ee Patch, Third Party Advisory
    Changed Reference Type https://github.com/saitoha/libsixel/issues/75 No Types Assigned https://github.com/saitoha/libsixel/issues/75 Exploit, Issue Tracking, Patch, Third Party Advisory
    Changed Reference Type https://github.com/saitoha/libsixel/releases/tag/v1.8.5 No Types Assigned https://github.com/saitoha/libsixel/releases/tag/v1.8.5 Release Notes, Third Party Advisory
    Added CWE NIST CWE-119
    Added CPE Configuration OR *cpe:2.3:a:libsixel_project:libsixel:*:*:*:*:*:*:*:* versions up to (excluding) 1.8.3
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2020-21050 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2020-21050 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.22 }} 0.05%

score

0.59583

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability