PT-2018-3777 · Libsixel+1 · Libsixel+1

Hongxuchen · Published 2018-07-28 · Updated 2024-12-20 · CVE-2020-21049

Positive Technologies (AI Summary)

CVSS v2.0

7.1

High

Base vector

AV:N/AC:M/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions libsixel versions prior to 1.8.5

Description The issue is related to an invalid read in the stb image.h component of libsixel, which can be exploited by attackers to cause a denial of service (DOS) via a crafted PSD file. This can be achieved by a remote attacker.

Recommendations For versions prior to 1.8.5, update to version 1.8.5 or later to resolve the issue. As a temporary workaround, consider restricting the use of the stb image.h component until a patch is available.

Exploit

Fix

DoS

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

ALT-PU-2020-2902

ALT-PU-2024-17256

BDU:2022-01680

CVE-2020-21049

Affected Products

Alt Linux

Libsixel

References · 14

• 🔥 https://github.com/saitoha/libsixel/issues/74 · Exploit
• https://github.com/saitoha/libsixel/commit/0b1e0b3f7b44233f84e5c9f512f8c90d6bbbe33d · Patch
• https://security-tracker.debian.org/tracker/CVE-2020-21049 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-21049 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2020-21049 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-21049 · Security Note
• https://ubuntu.com/security/CVE-2020-21049 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2020-21049 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2020-21049 · Security Note
• https://bdu.fstec.ru/vul/2022-01680 · Security Note
• https://github.com/saitoha/libsixel/releases/tag/v1.8.5 · Note
• https://github.com/saitoha/libsixel/blob/master/ChangeLog · Note
• https://bitbucket.org/netbsd/pkgsrc/commits/970a81d31ec7498e04d09b6b7771cef35f63cd28 · Note
• https://t.me/cibsecurity/28833 · Telegram Post