Upstream information

CVE-2018-20821 at MITRE


The parsing component in LibSass through 3.5.5 allows attackers to cause a denial-of-service (uncontrolled recursion in Sass::Parser::parse_css_variable_value in parser.cpp).

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having moderate 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 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
CVSSv3 Version 3.1
SUSE Bugzilla entry: 1133200 [RESOLVED / FIXED]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
SUSE Package Hub 15 SP1
  • libsass-3_6_1-1 >= 3.6.1-bp151.4.3.1
  • libsass-devel >= 3.6.1-bp151.4.3.1
SUSE Package Hub 15
  • libsass-3_6_1-1 >= 3.6.1-bp150.3.3.1
  • libsass-devel >= 3.6.1-bp150.3.3.1
openSUSE Leap 15.0
  • libsass-3_6_1-1 >= 3.6.1-lp150.2.3.1
  • libsass-devel >= 3.6.1-lp150.2.3.1
openSUSE Leap 15.1
  • libsass-3_6_1-1 >= 3.6.1-lp151.3.3.1
  • libsass-devel >= 3.6.1-lp151.3.3.1
openSUSE Tumbleweed
  • libsass-3_6_5-1 >= 3.6.5-1.2
  • libsass-devel >= 3.6.5-1.2
openSUSE Tumbleweed GA libsass-3_6_5-1-3.6.5-1.2

Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.

Product(s) Source package State
Products under general support and receiving all security fixes.
SUSE Linux Enterprise Module for Package Hub 15 SP4 libsass Already fixed
SUSE Linux Enterprise Module for Package Hub 15 SP5 libsass Already fixed
Products past their end of life and not receiving proactive updates anymore.
SUSE Package Hub 15 libsass Released
SUSE Package Hub 15 SP1 libsass Released

SUSE Timeline for this CVE

CVE page created: Wed Apr 24 05:47:52 2019
CVE page last modified: Fri Dec 8 17:19:13 2023