{"id":"CVE-2017-12963","aliases":["EUVD-2017-4484","GHSA-qqp3-5fc5-8mf5","UBUNTU-CVE-2017-12963"],"status":"published","title":"There is an illegal address access in Sass::Eval::operator() in eval.cpp of LibSass 3.4.5,...","description":"There is an illegal address access in Sass::Eval::operator() in eval.cpp of LibSass 3.4.5, leading to a remote denial of service attack. NOTE: this is similar to CVE-2017-11555 but remains exploitable after the vendor's CVE-2017-11555 fix (available from GitHub after 2017-07-24).","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":0.01225,"percentile":0.69005,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-125"],"published":"2017-08-18T21:00:00Z","modified":"2026-06-17T01:04:13Z","affected":[{"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=1482335","tags":["x_refsource_MISC","x_transferred","Issue Tracking","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-12963"},{"url":"https://github.com/advisories/GHSA-qqp3-5fc5-8mf5"},{"url":"https://ubuntu.com/security/CVE-2017-12963","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2017-12963","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2017-12963","description":"There is an illegal address access in Sass::Eval::operator() in eval.cpp of LibSass 3.4.5, leading to a remote denial of service attack. NOTE: this is similar to CVE-2017-11555 but remains exploitable after the vendor's CVE-2017-11555 fix (available from GitHub after 2017-07-24).","status":"published","published":"2017-08-18T21:00:00Z","modified":"2024-09-17T00:41:03.772Z","updated_at":"2026-11-02T14:33:17.59533Z"}],"euvd":[{"id":"EUVD-2017-4484","description":"There is an illegal address access in Sass::Eval::operator() in eval.cpp of LibSass 3.4.5, leading to a remote denial of service attack. NOTE: this is similar to CVE-2017-11555 but remains exploitable after the vendor's CVE-2017-11555 fix (available from GitHub after 2017-07-24).","status":"published","published":"2017-08-18T21:00:00Z","modified":"2024-09-17T00:41:03Z","updated_at":"2026-11-03T00:28:56.965297Z"}],"ghsa":[{"id":"GHSA-qqp3-5fc5-8mf5","title":"There is an illegal address access in Sass::Eval::operator() in eval.cpp of LibSass 3.4.5,...","description":"There is an illegal address access in Sass::Eval::operator() in eval.cpp of LibSass 3.4.5, leading to a remote denial of service attack. NOTE: this is similar to CVE-2017-11555 but remains exploitable after the vendor's CVE-2017-11555 fix (available from GitHub after 2017-07-24).","status":"published","published":"2022-05-17T01:59:05Z","modified":"2023-02-03T05:06:27Z","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-125"],"updated_at":"2026-11-02T14:53:54.29937Z"}],"nvd":[{"id":"CVE-2017-12963","description":"There is an illegal address access in Sass::Eval::operator() in eval.cpp of LibSass 3.4.5, leading to a remote denial of service attack. NOTE: this is similar to CVE-2017-11555 but remains exploitable after the vendor's CVE-2017-11555 fix (available from GitHub after 2017-07-24).","status":"published","published":"2017-08-18T21:29:00.493Z","modified":"2026-06-17T01:04:13.45Z","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","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-125"],"updated_at":"2026-11-02T14:03:57.82609Z"}],"osv":[{"id":"UBUNTU-CVE-2017-12963","description":"There is an illegal address access in Sass::Eval::operator() in eval.cpp of LibSass 3.4.5, leading to a remote denial of service attack. NOTE: this is similar to CVE-2017-11555 but remains exploitable after the vendor's CVE-2017-11555 fix (available from GitHub after 2017-07-24).","status":"published","published":"2017-08-18T21:29:00Z","modified":"2026-04-22T11:13:31.043219Z","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":"2026-11-02T15:54:14.122973Z"}]}}