{"id":"UBUNTU-CVE-2018-19837","details":"In LibSass prior to 3.5.5, Sass::Eval::operator()(Sass::Binary_Expression*) inside eval.cpp allows attackers to cause a denial-of-service resulting from stack consumption via a crafted sass file, because of certain incorrect parsing of '%' as a modulo operator in parser.cpp.","modified":"2026-04-22T13:01:24.815837Z","published":"2018-12-04T09:29:00Z","upstream":["CVE-2018-19837"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-19837"},{"type":"REPORT","url":"https://github.com/sass/libsass/issues/2659"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2018-19837"}],"affected":[{"package":{"name":"libsass","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/libsass@3.3.4-1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.2.5-1","3.2.5-2","3.3.2-1","3.3.4-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libsass0","binary_version":"3.3.4-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-19837.json"}},{"package":{"name":"libsass","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/libsass@3.4.8-1ubuntu0.1~esm1?arch=source&distro=esm-apps/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.4.3-1","3.4.6-1","3.4.8-1","3.4.8-1ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libsass0","binary_version":"3.4.8-1ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-19837.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}