{"id":"CVE-2019-19334","aliases":["DEBIAN-CVE-2019-19334","EUVD-2019-8955","GHSA-936c-h6q8-79c4","RHSA-2019:4360","UBUNTU-CVE-2019-19334"],"status":"published","title":"In all versions of libyang before 1.0-r5, a stack-based buffer overflow was discovered in the way...","description":"In all versions of libyang before 1.0-r5, a stack-based buffer overflow was discovered in the way libyang parses YANG files with a leaf of type \"identityref\". An application that uses libyang to parse untrusted YANG files may be vulnerable to this flaw, which would allow an attacker to cause a denial of service or possibly gain code execution.","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":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.0387,"percentile":0.90284,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-121","CWE-787"],"published":"2019-12-06T15:22:19Z","modified":"2026-10-20T13:56:47Z","fixes":[{"ecosystem":"Debian:13","package":"libyang","fixed_in":["0.16.105-2"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"libyang","fixed_in":["0.16.105-2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:13","package":"libyang","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.16.105-2"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"libyang","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.16.105-2"}]}]},{"source":"osv","ecosystem":"Red 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all versions of libyang before 1.0-r5, a stack-based buffer overflow was discovered in the way libyang parses YANG files with a leaf of type \"identityref\". An application that uses libyang to parse untrusted YANG files may be vulnerable to this flaw, which would allow an attacker to cause a denial of service or possibly gain code execution.","status":"published","published":"2019-12-06T15:22:19Z","modified":"2024-08-05T02:16:46.899Z","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":"cna"}],"cwes":["CWE-121"],"updated_at":"2026-11-02T14:20:20.397093Z"}],"euvd":[{"id":"EUVD-2019-8955","description":"In all versions of libyang before 1.0-r5, a stack-based buffer overflow was discovered in the way libyang parses YANG files with a leaf of type \"identityref\". An application that uses libyang to parse untrusted YANG files may be vulnerable to this flaw, which would allow an attacker to cause a denial of service or possibly gain code execution.","status":"published","published":"2019-12-06T15:22:19Z","modified":"2024-08-05T02:16:46Z","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":"2026-11-03T02:40:25.841101Z"}],"ghsa":[{"id":"GHSA-936c-h6q8-79c4","title":"In all versions of libyang before 1.0-r5, a stack-based buffer overflow was discovered in the way...","description":"In all versions of libyang before 1.0-r5, a stack-based buffer overflow was discovered in the way libyang parses YANG files with a leaf of type \"identityref\". An application that uses libyang to parse untrusted YANG files may be vulnerable to this flaw, which would allow an attacker to cause a denial of service or possibly gain code execution.","status":"published","published":"2022-05-24T17:02:48Z","modified":"2024-04-04T02:42:15Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-121","CWE-787"],"updated_at":"2026-11-02T14:56:11.047077Z"}],"nvd":[{"id":"CVE-2019-19334","description":"In all versions of libyang before 1.0-r5, a stack-based buffer overflow was discovered in the way libyang parses YANG files with a leaf of type \"identityref\". An application that uses libyang to parse untrusted YANG files may be vulnerable to this flaw, which would allow an attacker to cause a denial of service or possibly gain code execution.","status":"published","published":"2019-12-06T16:15:10.92Z","modified":"2026-06-17T02:26:31.343Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"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":"secondary"},{"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-121","CWE-787"],"updated_at":"2026-11-02T14:05:38.993437Z"}],"osv":[{"id":"CVE-2019-19334","description":"In all versions of libyang before 1.0-r5, a stack-based buffer overflow was discovered in the way libyang parses YANG files with a leaf of type \"identityref\". 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An application that uses libyang to parse untrusted YANG files may be vulnerable to this flaw, which would allow an attacker to cause a denial of service or possibly gain code execution.","status":"withdrawn","published":"2019-12-06T16:15:00Z","modified":"2025-07-16T08:14:34.206863Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"},{"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":"2026-11-02T15:54:20.325378Z"}]}}