CVE-2018-19838 Information

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().

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Reference

http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00047.html http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00051.html http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00027.html https://github.com/sass/libsass/issues/2660

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

6.5