CVE-2018-19838

Upstream information

CVE-2018-19838 at MITRE

Description

In LibSass prior to 3.5.5, functions inside ast.cpp for IMPLEMENT_AST_OPERATORS expansion allow attackers to cause a denial-of-service resulting from stack consumption via a crafted sass file, as demonstrated by recursive calls involving clone(), cloneChildren(), and copy().

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SUSE information

Overall state of this security issue: Does not affect SUSE products

This issue is currently rated as having low severity.

CVSS v2 Scores

	National Vulnerability Database
Base Score	4.3
Vector	AV:N/AC:M/Au:N/C:N/I:N/A:P
Access Vector	Network
Access Complexity	Medium
Authentication	None
Confidentiality Impact	None
Integrity Impact	None
Availability Impact	Partial

CVSS v3 Scores

	National Vulnerability Database
Base Score	6.5
Vector	AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Access Vector	Network
Access Complexity	Low
Privileges Required	None
User Interaction	Required
Scope	Unchanged
Confidentiality Impact	None
Integrity Impact	None
Availability Impact	High
CVSSv3 Version	3.0

SUSE Bugzilla entry: 1118349 [RESOLVED / FIXED]

SUSE Security Advisories:

• openSUSE-SU-2019:1791-1, published Tue, 23 Jul 2019 18:14:28 +0200 (CEST)
• openSUSE-SU-2019:1800-1, published Wed, 24 Jul 2019 18:11:17 +0200 (CEST)
• openSUSE-SU-2019:1883-1, published Wed, 14 Aug 2019 18:12:03 +0200 (CEST)

List of released packages

Product(s)	Fixed package version(s)	References
openSUSE Leap 15.0	libsass >= 3.6.1-lp150.2.3.1 libsass-3_6_1-1 >= 3.6.1-lp150.2.3.1 libsass-3_6_1-1-debuginfo >= 3.6.1-lp150.2.3.1 libsass-debugsource >= 3.6.1-lp150.2.3.1 libsass-devel >= 3.6.1-lp150.2.3.1	Patchnames: openSUSE-2019-1791
openSUSE Leap 15.1	libsass >= 3.6.1-lp151.3.3.1 libsass-3_6_1-1 >= 3.6.1-lp151.3.3.1 libsass-3_6_1-1-debuginfo >= 3.6.1-lp151.3.3.1 libsass-debugsource >= 3.6.1-lp151.3.3.1 libsass-devel >= 3.6.1-lp151.3.3.1	Patchnames: openSUSE-2019-1791