{"id":"UBUNTU-CVE-2017-9334","details":"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.","modified":"2026-04-22T11:36:26.713219Z","published":"2017-06-01T05:29:00Z","upstream":["CVE-2017-9334"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2017-9334"},{"type":"REPORT","url":"http://lists.nongnu.org/archive/html/chicken-announce/2017-05/msg00000.html"},{"type":"REPORT","url":"http://lists.nongnu.org/archive/html/chicken-hackers/2017-05/msg00099.html"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2017-9334"}],"affected":[{"package":{"name":"chicken","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/chicken@4.9.0.1-1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.9.0.1-1"],"ecosystem_specific":{"binaries":[{"binary_name":"chicken-bin","binary_version":"4.9.0.1-1"},{"binary_name":"libchicken7","binary_version":"4.9.0.1-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2017/UBUNTU-CVE-2017-9334.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}