PT-2018-15121 · Sass+2 · Libsass+2

Hongxuchen · Published 2018-12-04 · Updated 2020-04-01 · CVE-2018-19837

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions LibSass versions prior to 3.5.5

Description The issue allows attackers to cause a denial-of-service resulting from stack consumption via a crafted sass file. This is due to incorrect parsing of '%' as a modulo operator.

Recommendations For versions prior to 3.5.5, update to version 3.5.5 or later to resolve the issue. As a temporary workaround, consider avoiding the use of '%' as a modulo operator in sass files until the issue is resolved.

Exploit

Fix

DoS

Resource Exhaustion

Weakness Enumeration

CWE-400

Related Identifiers

ALT-PU-2020-1653

CVE-2018-19837

MGASA-2020-0049

OPENSUSE-SU-2019:1791-1

OPENSUSE-SU-2019:1800-1

OPENSUSE-SU-2019:1883-1

OPENSUSE-SU-2019_1791-1

OPENSUSE-SU-2024:10988-1

Affected Products

Alt Linux

Libsass

Suse

References · 91

• 🔥 https://github.com/sass/libsass/commit/210fdff7a65370c2ae24e022a2b35da8c423cc5f · Exploit
• https://github.com/sass/libsass/issues/2659 · Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00047.html · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-11499 · Security Note
• https://osv.dev/vulnerability/MGASA-2020-0049 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-11697 · Security Note
• https://osv.dev/vulnerability/CVE-2018-19837 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2019:1791-1 · Vendor Advisory
• http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00051.html · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2018-19837 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2019:1800-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2018-19837 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-19839 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-19837 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-11693 · Security Note