PT-2022-11292 · Libsixel+2 · Libsixel+2

A4865Go · Published 2022-04-08 · Updated 2024-12-20 · CVE-2021-40656

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions libsixel versions prior to 1.10

Description The issue is related to a Buffer Overflow in the libsixel/src/quant.c file at line 867. This is a general information about the problem, and no specific details about the number of potentially affected devices or real-world incidents are provided.

Recommendations For versions prior to 1.10, update to version 1.10 or later to resolve the issue. As a temporary workaround, consider restricting access to the quant.c file until a patch is available.

Exploit

Fix

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

ALT-PU-2023-1540

ALT-PU-2023-1591

ALT-PU-2024-17256

CVE-2021-40656

Affected Products

Alt Linux

Debian

Libsixel

References · 9

• 🔥 https://github.com/libsixel/libsixel/issues/25 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-40656 · Security Note
• https://ubuntu.com/security/CVE-2021-40656 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-40656 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2021-40656 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-40656 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-40656 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-40656 · Vendor Advisory
• https://t.me/cibsecurity/40388 · Telegram Post