CVE Vulnerability

CVE-2020-21677

A heap-based buffer overflow in the sixel_encoder_output_without_macro 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.

4.3 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8.6 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

Scope

6.5 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://github.com/saitoha/libsixel/issues/123 Exploit Issue Tracking
Configurations

Configuration 1

cpe:2.3:a:libsixel_project:libsixel:1.8.4:*:*:*:*:*:*:*
Information

Published : 2021-08-10 09:15

Updated : 2021-08-17 04:30

NVD link : CVE-2020-21677

Mitre link : CVE-2020-21677

Products Affected
No products.
CWE
CWE-787