{"id":"CVE-2019-20392","aliases":["ALEA-2021:1906","DEBIAN-CVE-2019-20392","DLA-3572-1","EUVD-2019-10942","GHSA-5xx9-wg6x-hj24","RHEA-2021:1906","UBUNTU-CVE-2019-20392"],"status":"published","title":"An invalid memory access flaw is present in libyang before v1.0-r1 in the function...","description":"An invalid memory access flaw is present in libyang before v1.0-r1 in the function resolve_feature_value() when an if-feature statement is used inside a list key node, and the feature used is not defined. Applications that use libyang to parse untrusted input yang files may crash.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.01876,"percentile":0.79684,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-119"],"published":"2020-01-22T00:00:00Z","modified":"2026-10-29T11:12:08Z","fixes":[{"ecosystem":"Debian:13","package":"libyang","fixed_in":["1.0.176-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"libyang","fixed_in":["1.0.176-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"AlmaLinux:8","package":"libyang","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.184-1.el8"}]}],"bundled":8},{"source":"osv","ecosystem":"Debian:13","package":"libyang","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.176-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"libyang","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.176-1"}]}]},{"source":"osv","ecosystem":"Debian:10","package":"libyang","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.16.105+really1.0-0+deb10u1"}]}],"versions":["0.16.105-1","0.16.105-1+deb10u1","0.16.105-2","0.16.105-3"],"bundled":8},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:8::appstream","package":"libyang","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:1.0.184-1.el8"}]}],"bundled":8},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:8::appstream","package":"libyang-cpp-debuginfo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:1.0.184-1.el8"}]}],"bundled":8},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:8::appstream","package":"libyang-debuginfo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:1.0.184-1.el8"}]}],"bundled":8},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:8::appstream","package":"libyang-debugsource","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:1.0.184-1.el8"}]}],"bundled":8},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:8::appstream","package":"python3-libyang-debuginfo","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:1.0.184-1.el8"}]}],"bundled":8},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"libyang","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.16.105-1","0.16.105-2","0.16.105-3","0.16.105-3build1"]}],"products":[{"vendor":"cesnet","product":"libyang"}],"references":[{"url":"https://github.com/CESNET/libyang/commit/32fb4993bc8bb49e93e84016af3c10ea53964be5","tags":["x_transferred","Patch","Third Party Advisory","fix","report"]},{"url":"https://github.com/CESNET/libyang/issues/723","tags":["x_transferred","Exploit","Third Party Advisory","evidence","report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1793922","tags":["x_transferred","Issue Tracking","Patch","Third Party Advisory","fix","report"]},{"url":"https://github.com/CESNET/libyang/compare/v0.16-r3...v1.0-r1","tags":["x_transferred","Third Party Advisory","advisory","report"]},{"url":"https://lists.debian.org/debian-lts-announce/2023/09/msg00019.html","tags":["mailing-list","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-20392","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-5xx9-wg6x-hj24"},{"url":"https://errata.almalinux.org/8/ALEA-2021-1906.html","tags":["advisory"]},{"url":"https://vulners.com/cve/CVE-2019-20391","tags":["report"]},{"url":"https://vulners.com/cve/CVE-2019-20392","tags":["report"]},{"url":"https://vulners.com/cve/CVE-2019-20393","tags":["report"]},{"url":"https://vulners.com/cve/CVE-2019-20394","tags":["report"]},{"url":"https://vulners.com/cve/CVE-2019-20395","tags":["report"]},{"url":"https://vulners.com/cve/CVE-2019-20396","tags":["report"]},{"url":"https://vulners.com/cve/CVE-2019-20397","tags":["report"]},{"url":"https://vulners.com/cve/CVE-2019-20398","tags":["report"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2019-20392","tags":["advisory"]},{"url":"https://access.redhat.com/errata/RHEA-2021:1906","tags":["advisory"]},{"url":"https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.4_release_notes/index","tags":["article"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1910046","tags":["report"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2021/rhea-2021_1906.json","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2019-20391","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1793934","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2019-20391","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-20391","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2019-20392","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2019-20392","tags":["advisory","report"]},{"url":"https://access.redhat.com/security/cve/CVE-2019-20393","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1793930","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2019-20393","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-20393","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2019-20394","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1793932","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2019-20394","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-20394","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2019-20395","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1793924","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2019-20395","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-20395","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2019-20396","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1793929","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2019-20396","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-20396","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2019-20397","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1793928","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2019-20397","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-20397","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2019-20398","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1793935","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2019-20398","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-20398","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2019-20392","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2019-20392","description":"An invalid memory access flaw is present in libyang before v1.0-r1 in the function resolve_feature_value() when an if-feature statement is used inside a list key node, and the feature used is not defined. Applications that use libyang to parse untrusted input yang files may crash.","status":"published","published":"2020-01-22T00:00:00Z","modified":"2024-08-05T02:39:09.196Z","updated_at":"2026-11-02T14:20:17.431882Z"}],"euvd":[{"id":"EUVD-2019-10942","description":"An invalid memory access flaw is present in libyang before v1.0-r1 in the function resolve_feature_value() when an if-feature statement is used inside a list key node, and the feature used is not defined. Applications that use libyang to parse untrusted input yang files may crash.","status":"published","published":"2020-01-22T00:00:00Z","modified":"2024-08-05T02:39:09Z","updated_at":"2026-11-03T02:40:22.238276Z"}],"ghsa":[{"id":"GHSA-5xx9-wg6x-hj24","title":"An invalid memory access flaw is present in libyang before v1.0-r1 in the function...","description":"An invalid memory access flaw is present in libyang before v1.0-r1 in the function resolve_feature_value() when an if-feature statement is used inside a list key node, and the feature used is not defined. 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Applications that use libyang to parse untrusted input yang files may crash.","status":"published","published":"2020-01-22T22:15:10.143Z","modified":"2026-06-17T02:30:21.12Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T14:05:42.416368Z"}],"osv":[{"id":"CVE-2019-20392","description":"An invalid memory access flaw is present in libyang before v1.0-r1 in the function resolve_feature_value() when an if-feature statement is used inside a list key node, and the feature used is not defined. Applications that use libyang to parse untrusted input yang files may crash.","status":"published","published":"2020-01-22T22:15:10.143Z","modified":"2026-10-29T11:12:08.074478637Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:44:12.010761Z"},{"id":"DEBIAN-CVE-2019-20392","description":"An invalid memory access flaw is present in libyang before v1.0-r1 in the function resolve_feature_value() when an if-feature statement is used inside a list key node, and the feature used is not defined. 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