Bug 2235705 (CVE-2022-43357)

Summary:	CVE-2022-43357 libsass: stack overflow in Sass::CompoundSelector::has_real_parent_ref() in ast_selectors.cpp
Product:	[Other] Security Response	Reporter:	Vipul Nair <vinair>
Component:	vulnerability	Assignee:	Product Security <prodsec-ir-bot>
Status:	NEW ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	desktop-qa-list, fmuellner
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2235706, 2235707, 2236108
Bug Blocks:	2235711

Description Vipul Nair 2023-08-29 13:40:30 UTC

Stack overflow vulnerability in ast_selectors.cpp in function Sass::CompoundSelector::has_real_parent_ref in libsass:3.6.5-8-g210218, which can be exploited by attackers to causea denial of service (DoS). Also affects the command line driver for libsass, sassc 3.6.2.

https://github.com/sass/libsass/issues/3177
https://github.com/sass/libsass
https://drive.google.com/file/d/1aC5q3czen0atI91fuBIoCBFkS30_OSWX/

Comment 1 Vipul Nair 2023-08-29 13:41:17 UTC

Created libsass tracking bugs for this issue:

Affects: epel-all [bug 2235706]
Affects: fedora-all [bug 2235707]