{"id":"CVE-2017-6949","aliases":["DEBIAN-CVE-2017-6949","DLA-908-1","EUVD-2017-15989","GHSA-mg7g-v2j9-85r8","UBUNTU-CVE-2017-6949"],"status":"published","title":"An issue was discovered in CHICKEN Scheme through 4.12.0. When using a nonstandard CHICKEN...","description":"An issue was discovered in CHICKEN Scheme through 4.12.0. When using a nonstandard CHICKEN-specific extension to allocate an SRFI-4 vector in unmanaged memory, the vector size would be used in unsanitised form as an argument to malloc(). With an unexpected size, the impact may have been a segfault or buffer overflow.","severity":{"version":"3.0","score":8.1,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.01479,"percentile":0.74062,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-119"],"published":"2017-03-16T17:00:00Z","modified":"2026-09-01T20:03:49Z","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"]},{"ecosystem":"Debian:7","package":"chicken","fixed_in":["4.7.0-1+deb7u2"],"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":"Debian:7","package":"chicken","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.7.0-1+deb7u2"}]}],"versions":["4.7.0-1","4.7.0-1+deb7u1"]},{"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://www.securityfocus.com/bid/97317","tags":["vdb-entry","x_refsource_BID","x_transferred","web"]},{"url":"http://lists.gnu.org/archive/html/chicken-announce/2017-03/msg00000.html","tags":["x_refsource_CONFIRM","x_transferred","Mailing List","Patch","Third Party Advisory","fix","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-6949"},{"url":"https://github.com/advisories/GHSA-mg7g-v2j9-85r8"},{"url":"https://security-tracker.debian.org/tracker/CVE-2017-6949","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2017-6949","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2017-6949","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2017-6949","description":"An issue was discovered in CHICKEN Scheme through 4.12.0. When using a nonstandard CHICKEN-specific extension to allocate an SRFI-4 vector in unmanaged memory, the vector size would be used in unsanitised form as an argument to malloc(). With an unexpected size, the impact may have been a segfault or buffer overflow.","status":"published","published":"2017-03-16T17:00:00Z","modified":"2024-08-05T15:49:02.87Z","updated_at":"2026-11-02T14:33:16.916541Z"}],"euvd":[{"id":"EUVD-2017-15989","description":"An issue was discovered in CHICKEN Scheme through 4.12.0. When using a nonstandard CHICKEN-specific extension to allocate an SRFI-4 vector in unmanaged memory, the vector size would be used in unsanitised form as an argument to malloc(). With an unexpected size, the impact may have been a segfault or buffer overflow.","status":"published","published":"2017-03-16T17:00:00Z","modified":"2024-08-05T15:49:02Z","updated_at":"2026-11-03T02:39:10.49179Z"}],"ghsa":[{"id":"GHSA-mg7g-v2j9-85r8","title":"An issue was discovered in CHICKEN Scheme through 4.12.0. When using a nonstandard CHICKEN...","description":"An issue was discovered in CHICKEN Scheme through 4.12.0. When using a nonstandard CHICKEN-specific extension to allocate an SRFI-4 vector in unmanaged memory, the vector size would be used in unsanitised form as an argument to malloc(). With an unexpected size, the impact may have been a segfault or buffer overflow.","status":"published","published":"2022-05-17T02:51:51Z","modified":"2023-01-27T05:06:37Z","cvss":[{"version":"3.0","score":8.1,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T14:42:57.198879Z"}],"nvd":[{"id":"CVE-2017-6949","description":"An issue was discovered in CHICKEN Scheme through 4.12.0. When using a nonstandard CHICKEN-specific extension to allocate an SRFI-4 vector in unmanaged memory, the vector size would be used in unsanitised form as an argument to malloc(). With an unexpected size, the impact may have been a segfault or buffer overflow.","status":"published","published":"2017-03-16T17:59:00.157Z","modified":"2026-06-17T01:23:21.7Z","cvss":[{"version":"3.0","score":8.1,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T14:03:44.275273Z"}],"osv":[{"id":"CVE-2017-6949","description":"An issue was discovered in CHICKEN Scheme through 4.12.0. When using a nonstandard CHICKEN-specific extension to allocate an SRFI-4 vector in unmanaged memory, the vector size would be used in unsanitised form as an argument to malloc(). With an unexpected size, the impact may have been a segfault or buffer overflow.","status":"published","published":"2017-03-16T17:59:00.157Z","modified":"2026-03-14T09:26:25.454736Z","cvss":[{"version":"3.0","score":8.1,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:06.412595Z"},{"id":"DEBIAN-CVE-2017-6949","description":"An issue was discovered in CHICKEN Scheme through 4.12.0. When using a nonstandard CHICKEN-specific extension to allocate an SRFI-4 vector in unmanaged memory, the vector size would be used in unsanitised form as an argument to malloc(). With an unexpected size, the impact may have been a segfault or buffer overflow.","status":"published","published":"2017-03-16T17:59:00.157Z","modified":"2026-09-01T20:03:49.545959832Z","cvss":[{"version":"3.0","score":8.1,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:29.412243Z"},{"id":"UBUNTU-CVE-2017-6949","description":"An issue was discovered in CHICKEN Scheme through 4.12.0. When using a nonstandard CHICKEN-specific extension to allocate an SRFI-4 vector in unmanaged memory, the vector size would be used in unsanitised form as an argument to malloc(). With an unexpected size, the impact may have been a segfault or buffer overflow.","status":"published","published":"2017-03-16T17:59:00Z","modified":"2026-04-22T11:30:32.831324Z","cvss":[{"version":"3.0","score":8.1,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:54:15.773974Z"},{"id":"DLA-908-1","title":"chicken - security update","status":"published","published":"2017-04-23T00:00:00Z","modified":"2026-03-09T02:09:07.93308Z","updated_at":"2026-11-02T15:46:13.584509Z"}]}}