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CVE-2020-21050

Date: September 14, 2021

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

Language: C

Severity Score

6.5

Related Resources (9)

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

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

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

Url: https://security-tracker.debian.org/tracker/CVE-2020-21050

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

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

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

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

Url: https://www.mend.io/vulnerability-database/CVE-2020-21050

Severity Score

6.5

Weakness Type (CWE)

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-119

Out-of-bounds Write

CWE-787

CVSS v3.1

Base Score:	6.5
Attack Vector (AV):	NETWORK
Attack Complexity (AC):	LOW
Privileges Required (PR):	NONE
User Interaction (UI):	REQUIRED
Scope (S):	UNCHANGED
Confidentiality (C):	NONE
Integrity (I):	NONE
Availability (A):	HIGH

CVSS v2

Base Score:	4.3
Access Vector (AV):	NETWORK
Access Complexity (AC):	MEDIUM
Authentication (AU):	NONE
Confidentiality (C):	NONE
Integrity (I):	NONE
Availability (A):	PARTIAL
Additional information:

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