{"id":"CVE-2017-9334","aliases":["DEBIAN-CVE-2017-9334","EUVD-2017-18269","GHSA-mm87-prr6-cmmh","UBUNTU-CVE-2017-9334"],"status":"published","title":"An incorrect \"pair?\" check in the Scheme \"length\" procedure results in an unsafe pointer...","description":"An incorrect \"pair?\" check in the Scheme \"length\" procedure results in an unsafe pointer dereference in all CHICKEN Scheme versions prior to 4.13, which allows an attacker to cause a denial of service by passing an improper list to an application that calls \"length\" on it.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/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":0.01549,"percentile":0.75244,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-20"],"published":"2017-06-01T04:53:00Z","modified":"2026-09-01T20:03:51Z","fixes":[{"ecosystem":"Debian:12","package":"chicken","fixed_in":["4.12.0-0.2"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"chicken","fixed_in":["4.12.0-0.2"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"chicken","fixed_in":["4.12.0-0.2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"chicken","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.12.0-0.2"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"chicken","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.12.0-0.2"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"chicken","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.12.0-0.2"}]}]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"chicken","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.9.0.1-1"]}],"products":[{"vendor":"call-cc","product":"chicken"}],"references":[{"url":"http://lists.nongnu.org/archive/html/chicken-hackers/2017-05/msg00099.html","tags":["x_refsource_CONFIRM","x_transferred","Patch","Third Party Advisory","fix","report"]},{"url":"http://lists.nongnu.org/archive/html/chicken-announce/2017-05/msg00000.html","tags":["x_refsource_CONFIRM","x_transferred","Patch","Third Party Advisory","fix","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-9334"},{"url":"https://github.com/advisories/GHSA-mm87-prr6-cmmh"},{"url":"https://security-tracker.debian.org/tracker/CVE-2017-9334","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2017-9334","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2017-9334","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2017-9334","description":"An incorrect \"pair?\" check in the Scheme \"length\" procedure results in an unsafe pointer dereference in all CHICKEN Scheme versions prior to 4.13, which allows an attacker to cause a denial of service by passing an improper list to an application that calls \"length\" on it.","status":"published","published":"2017-06-01T04:53:00Z","modified":"2024-08-05T17:02:44.325Z","updated_at":"2026-11-02T14:33:13.606903Z"}],"euvd":[{"id":"EUVD-2017-18269","description":"An incorrect \"pair?\" check in the Scheme \"length\" procedure results in an unsafe pointer dereference in all CHICKEN Scheme versions prior to 4.13, which allows an attacker to cause a denial of service by passing an improper list to an application that calls \"length\" on it.","status":"published","published":"2017-06-01T04:53:00Z","modified":"2024-08-05T17:02:44Z","updated_at":"2026-11-03T02:23:28.210565Z"}],"ghsa":[{"id":"GHSA-mm87-prr6-cmmh","title":"An incorrect \"pair?\" check in the Scheme \"length\" procedure results in an unsafe pointer...","description":"An incorrect \"pair?\" check in the Scheme \"length\" procedure results in an unsafe pointer dereference in all CHICKEN Scheme versions prior to 4.13, which allows an attacker to cause a denial of service by passing an improper list to an application that calls \"length\" on it.","status":"published","published":"2022-05-13T01:24:28Z","modified":"2023-02-01T05:07:30Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:50:32.865918Z"}],"nvd":[{"id":"CVE-2017-9334","description":"An incorrect \"pair?\" check in the Scheme \"length\" procedure results in an unsafe pointer dereference in all CHICKEN Scheme versions prior to 4.13, which allows an attacker to cause a denial of service by passing an improper list to an application that calls \"length\" on it.","status":"published","published":"2017-06-01T05:29:00.233Z","modified":"2026-06-17T01:27:54.433Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/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-20"],"updated_at":"2026-11-02T14:03:49.449157Z"}],"osv":[{"id":"CVE-2017-9334","description":"An incorrect \"pair?\" check in the Scheme \"length\" procedure results in an unsafe pointer dereference in all CHICKEN Scheme versions prior to 4.13, which allows an attacker to cause a denial of service by passing an improper list to an application that calls \"length\" on it.","status":"published","published":"2017-06-01T05:29:00.233Z","modified":"2026-03-14T09:25:17.044684Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:06.868403Z"},{"id":"DEBIAN-CVE-2017-9334","description":"An incorrect \"pair?\" check in the Scheme \"length\" procedure results in an unsafe pointer dereference in all CHICKEN Scheme versions prior to 4.13, which allows an attacker to cause a denial of service by passing an improper list to an application that calls \"length\" on it.","status":"published","published":"2017-06-01T05:29:00.233Z","modified":"2026-09-01T20:03:51.673219253Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:29.698576Z"},{"id":"UBUNTU-CVE-2017-9334","description":"An incorrect \"pair?\" check in the Scheme \"length\" procedure results in an unsafe pointer dereference in all CHICKEN Scheme versions prior to 4.13, which allows an attacker to cause a denial of service by passing an improper list to an application that calls \"length\" on it.","status":"published","published":"2017-06-01T05:29:00Z","modified":"2026-04-22T11:36:26.713219Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:54:16.154988Z"}]}}