{"id":"CVE-2017-11556","aliases":["DEBIAN-CVE-2017-11556","EUVD-2017-3171","GHSA-x2cj-w5c5-j878","UBUNTU-CVE-2017-11556"],"status":"published","title":"There is a stack consumption vulnerability in the Parser::advanceToNextToken function in parser...","description":"There is a stack consumption vulnerability in the Parser::advanceToNextToken function in parser.cpp in LibSass 3.4.5. A crafted input may lead to remote denial of service.","severity":{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01201,"percentile":0.68416,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-674"],"published":"2017-07-23T03:00:00Z","modified":"2026-09-01T20:03:41Z","fixes":[{"ecosystem":"Debian:12","package":"libsass","fixed_in":["3.5.4-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"libsass","fixed_in":["3.5.4-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"libsass","fixed_in":["3.5.4-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"libsass","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.5.4-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"libsass","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.5.4-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"libsass","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.5.4-1"}]}]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"libsass","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.2.5-1","3.2.5-2","3.3.2-1","3.3.4-1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"libsass","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"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"libsass","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.5.5-4","3.6.3-1ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"libsass","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.6.5-1ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"libsass","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.6.5+20220909-1ubuntu1","3.6.5+20231221-3"]}],"products":[{"vendor":"libsass","product":"libsass"}],"references":[{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1471786","tags":["x_refsource_MISC","x_transferred","Exploit","Issue Tracking","Third Party Advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-11556"},{"url":"https://github.com/advisories/GHSA-x2cj-w5c5-j878"},{"url":"https://security-tracker.debian.org/tracker/CVE-2017-11556","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2017-11556","tags":["report"]},{"url":"https://github.com/sass/libsass/issues/2447","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2017-11556","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2017-11556","description":"There is a stack consumption vulnerability in the Parser::advanceToNextToken function in parser.cpp in LibSass 3.4.5. A crafted input may lead to remote denial of service.","status":"published","published":"2017-07-23T03:00:00Z","modified":"2024-08-05T18:12:40.336Z","updated_at":"2026-11-02T14:33:19.848632Z"}],"euvd":[{"id":"EUVD-2017-3171","description":"There is a stack consumption vulnerability in the Parser::advanceToNextToken function in parser.cpp in LibSass 3.4.5. A crafted input may lead to remote denial of service.","status":"published","published":"2017-07-23T03:00:00Z","modified":"2024-08-05T18:12:40Z","updated_at":"2026-11-03T02:23:23.105133Z"}],"ghsa":[{"id":"GHSA-x2cj-w5c5-j878","title":"There is a stack consumption vulnerability in the Parser::advanceToNextToken function in parser...","description":"There is a stack consumption vulnerability in the Parser::advanceToNextToken function in parser.cpp in LibSass 3.4.5. A crafted input may lead to remote denial of service.","status":"published","published":"2022-05-13T01:42:25Z","modified":"2023-02-02T05:00:45Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-674"],"updated_at":"2026-11-02T14:51:02.304407Z"}],"nvd":[{"id":"CVE-2017-11556","description":"There is a stack consumption vulnerability in the Parser::advanceToNextToken function in parser.cpp in LibSass 3.4.5. A crafted input may lead to remote denial of service.","status":"published","published":"2017-07-23T03:29:01.063Z","modified":"2026-06-17T01:01:59.9Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-674"],"updated_at":"2026-11-02T14:03:54.862898Z"}],"osv":[{"id":"CVE-2017-11556","description":"There is a stack consumption vulnerability in the Parser::advanceToNextToken function in parser.cpp in LibSass 3.4.5. A crafted input may lead to remote denial of service.","status":"published","published":"2017-07-23T03:29:01.063Z","modified":"2026-03-14T09:21:36.117289Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:03.851821Z"},{"id":"DEBIAN-CVE-2017-11556","description":"There is a stack consumption vulnerability in the Parser::advanceToNextToken function in parser.cpp in LibSass 3.4.5. A crafted input may lead to remote denial of service.","status":"published","published":"2017-07-23T03:29:01.063Z","modified":"2026-09-01T20:03:41.358283371Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:28.50097Z"},{"id":"UBUNTU-CVE-2017-11556","description":"There is a stack consumption vulnerability in the Parser::advanceToNextToken function in parser.cpp in LibSass 3.4.5. A crafted input may lead to remote denial of service.","status":"published","published":"2017-07-23T03:29:00Z","modified":"2026-04-22T11:11:40.717546Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:54:13.729565Z"}]}}