{"id":"CVE-2017-9225","aliases":["DEBIAN-CVE-2017-9225","EUVD-2017-18163","GHSA-24pf-h82m-5vvv","RHSA-2026:7545"],"status":"published","title":"An issue was discovered in Oniguruma 6.2.0, as used in Oniguruma-mod in Ruby through 2.4.1 and...","description":"An issue was discovered in Oniguruma 6.2.0, as used in Oniguruma-mod in Ruby through 2.4.1 and mbstring in PHP through 7.1.5. A stack out-of-bounds write in onigenc_unicode_get_case_fold_codes_by_str() occurs during regular expression compilation. Code point 0xFFFFFFFF is not properly handled in unicode_unfold_key(). A malformed regular expression could result in 4 bytes being written off the end of a stack buffer of expand_case_fold_string() during the call to onigenc_unicode_get_case_fold_codes_by_str(), a typical stack buffer overflow.","severity":{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.0308,"percentile":0.87765,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-787"],"published":"2017-05-24T15:00:00Z","modified":"2026-10-24T14:21:16Z","fixes":[{"ecosystem":"Debian:12","package":"libonig","fixed_in":["6.1.3-2"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"libonig","fixed_in":["6.1.3-2"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"libonig","fixed_in":["6.1.3-2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"libonig","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.3-2"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"libonig","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.3-2"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"libonig","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.3-2"}]}]},{"source":"osv","ecosystem":"Red Hat:hummingbird:1","package":"oniguruma","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:6.9.10-4.1.hum1"}]}],"bundled":2},{"source":"osv","ecosystem":"Red Hat:hummingbird:1","package":"oniguruma-devel","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:6.9.10-4.1.hum1"}]}],"bundled":2}],"products":[{"vendor":"oniguruma_project","product":"oniguruma"},{"vendor":"php","product":"php"},{"vendor":"ruby-lang","product":"ruby"}],"references":[{"url":"https://github.com/kkos/oniguruma/commit/166a6c3999bf06b4de0ab4ce6b088a468cc4029f","tags":["x_refsource_CONFIRM","x_transferred","Patch","Third Party Advisory","fix"]},{"url":"https://github.com/kkos/oniguruma/issues/56","tags":["x_refsource_CONFIRM","x_transferred","Exploit","Third Party Advisory","evidence"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-9225","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-24pf-h82m-5vvv"},{"url":"https://security-tracker.debian.org/tracker/CVE-2017-9225","tags":["advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2026:7545","tags":["advisory"]},{"url":"https://images.redhat.com/","tags":["article"]},{"url":"https://access.redhat.com/security/cve/CVE-2017-9229","tags":["report"]},{"url":"https://access.redhat.com/security/updates/classification/","tags":["article"]},{"url":"https://access.redhat.com/security/cve/CVE-2017-9225","tags":["report"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_7545.json","tags":["advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1466733","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2017-9225","tags":["advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1466746","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2017-9229","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-9229","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2017-9225","description":"An issue was discovered in Oniguruma 6.2.0, as used in Oniguruma-mod in Ruby through 2.4.1 and mbstring in PHP through 7.1.5. A stack out-of-bounds write in onigenc_unicode_get_case_fold_codes_by_str() occurs during regular expression compilation. Code point 0xFFFFFFFF is not properly handled in unicode_unfold_key(). A malformed regular expression could result in 4 bytes being written off the end of a stack buffer of expand_case_fold_string() during the call to onigenc_unicode_get_case_fold_codes_by_str(), a typical stack buffer overflow.","status":"published","published":"2017-05-24T15:00:00Z","modified":"2024-09-17T03:07:00.571Z","updated_at":"2026-11-02T14:33:13.96587Z"}],"euvd":[{"id":"EUVD-2017-18163","description":"An issue was discovered in Oniguruma 6.2.0, as used in Oniguruma-mod in Ruby through 2.4.1 and mbstring in PHP through 7.1.5. A stack out-of-bounds write in onigenc_unicode_get_case_fold_codes_by_str() occurs during regular expression compilation. Code point 0xFFFFFFFF is not properly handled in unicode_unfold_key(). A malformed regular expression could result in 4 bytes being written off the end of a stack buffer of expand_case_fold_string() during the call to onigenc_unicode_get_case_fold_codes_by_str(), a typical stack buffer overflow.","status":"published","published":"2017-05-24T15:00:00Z","modified":"2024-09-17T03:07:00Z","updated_at":"2026-11-03T00:28:34.673232Z"}],"ghsa":[{"id":"GHSA-24pf-h82m-5vvv","title":"An issue was discovered in Oniguruma 6.2.0, as used in Oniguruma-mod in Ruby through 2.4.1 and...","description":"An issue was discovered in Oniguruma 6.2.0, as used in Oniguruma-mod in Ruby through 2.4.1 and mbstring in PHP through 7.1.5. A stack out-of-bounds write in onigenc_unicode_get_case_fold_codes_by_str() occurs during regular expression compilation. Code point 0xFFFFFFFF is not properly handled in unicode_unfold_key(). A malformed regular expression could result in 4 bytes being written off the end of a stack buffer of expand_case_fold_string() during the call to onigenc_unicode_get_case_fold_codes_by_str(), a typical stack buffer overflow.","status":"published","published":"2022-05-17T02:42:49Z","modified":"2023-01-27T05:06:12Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:42:51.492706Z"}],"nvd":[{"id":"CVE-2017-9225","description":"An issue was discovered in Oniguruma 6.2.0, as used in Oniguruma-mod in Ruby through 2.4.1 and mbstring in PHP through 7.1.5. A stack out-of-bounds write in onigenc_unicode_get_case_fold_codes_by_str() occurs during regular expression compilation. Code point 0xFFFFFFFF is not properly handled in unicode_unfold_key(). A malformed regular expression could result in 4 bytes being written off the end of a stack buffer of expand_case_fold_string() during the call to onigenc_unicode_get_case_fold_codes_by_str(), a typical stack buffer overflow.","status":"published","published":"2017-05-24T15:29:00.23Z","modified":"2026-06-17T01:27:42.607Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:03:49.449157Z"}],"osv":[{"id":"CVE-2017-9225","description":"An issue was discovered in Oniguruma 6.2.0, as used in Oniguruma-mod in Ruby through 2.4.1 and mbstring in PHP through 7.1.5. A stack out-of-bounds write in onigenc_unicode_get_case_fold_codes_by_str() occurs during regular expression compilation. Code point 0xFFFFFFFF is not properly handled in unicode_unfold_key(). A malformed regular expression could result in 4 bytes being written off the end of a stack buffer of expand_case_fold_string() during the call to onigenc_unicode_get_case_fold_codes_by_str(), a typical stack buffer overflow.","status":"published","published":"2017-05-24T15:29:00.23Z","modified":"2026-10-24T14:21:16.430962884Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:44:06.868403Z"},{"id":"DEBIAN-CVE-2017-9225","description":"An issue was discovered in Oniguruma 6.2.0, as used in Oniguruma-mod in Ruby through 2.4.1 and mbstring in PHP through 7.1.5. A stack out-of-bounds write in onigenc_unicode_get_case_fold_codes_by_str() occurs during regular expression compilation. Code point 0xFFFFFFFF is not properly handled in unicode_unfold_key(). A malformed regular expression could result in 4 bytes being written off the end of a stack buffer of expand_case_fold_string() during the call to onigenc_unicode_get_case_fold_codes_by_str(), a typical stack buffer overflow.","status":"published","published":"2017-05-24T15:29:00.23Z","modified":"2026-09-01T20:03:51.557092137Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:45:29.698576Z"},{"id":"RHSA-2026:7545","title":"Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update","status":"published","published":"2026-04-22T10:10:02Z","modified":"2026-10-06T10:31:11.154617249Z","cvss":[{"version":"3.0","score":6.5,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H","level":"medium"}],"updated_at":"2026-11-02T15:53:22.928316Z"}]}}