PT-2023-14194 · Libass+2 · Libsass+2

Ex7L0It · Published 2023-08-22 · Updated 2024-06-15 · CVE-2022-43357

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions libsass versions 3.6.5-8-g210218 sassc version 3.6.2

Description The issue is a stack overflow vulnerability in the ast selectors.cpp file, specifically in the Sass::CompoundSelector::has real parent ref function. This vulnerability can be exploited by attackers to cause a denial of service (DoS). The command line driver for libsass, sassc, is also affected.

Recommendations For libsass version 3.6.5-8-g210218, consider updating to a newer version to resolve the issue. For sassc version 3.6.2, consider updating to a newer version to resolve the issue. As a temporary workaround, consider restricting access to the Sass::CompoundSelector::has real parent ref function until a patch is available.

Exploit

Fix

DoS

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

AZL-43714

AZL-44079

BIT-SASS-2022-43357

CVE-2022-43357

OESA-2024-1018

OESA-2024-1049

OPENSUSE-SU-2024:13516-1

SUSE-SU-2023:4895-1

Affected Products

Debian

Libsass

Sassc

References · 29

• 🔥 https://github.com/sass/libsass/issues/3177 · Exploit
• 🔥 https://drive.google.com/file/d/1aC5q3czen0atI91fuBIoCBFkS30_OSWX · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2022-43357 · Security Note
• https://osv.dev/vulnerability/CVE-2022-43357 · Vendor Advisory
• https://osv.dev/vulnerability/AZL-44079 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-43357 · Vendor Advisory
• https://osv.dev/vulnerability/AZL-43714 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:13516-1 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-43357 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-43357 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-43358 · Security Note
• https://cve.org/CVERecord?id=CVE-2022-43357 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2023:4895-1 · Vendor Advisory
• https://osv.dev/vulnerability/BIT-sass-2022-43357 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-26592 · Security Note