{"id":"CVE-2019-9578","aliases":["DEBIAN-CVE-2019-9578","EUVD-2019-18949","GHSA-6c8w-rwwq-6qqh","SUSE-SU-2019:1749-1","SUSE-SU-2019:1750-1","SUSE-SU-2021:1755-1","UBUNTU-CVE-2019-9578","openSUSE-SU-2019:1708-1","openSUSE-SU-2019:1725-1","openSUSE-SU-2021:0799-1","openSUSE-SU-2021:1755-1"],"status":"published","title":"In devs.c in Yubico libu2f-host before 1.1.8, the response to init is misparsed, leaking...","description":"In devs.c in Yubico libu2f-host before 1.1.8, the response to init is misparsed, leaking uninitialized stack memory back to the device.","severity":{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.02296,"percentile":0.83397,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-908"],"published":"2019-03-05T23:00:00Z","modified":"2026-10-20T13:53:00Z","fixes":[{"ecosystem":"Debian:12","package":"libu2f-host","fixed_in":["1.1.9-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"libu2f-host","fixed_in":["1.1.9-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"libu2f-host","fixed_in":["1.1.9-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"libu2f-host","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.9-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"libu2f-host","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.9-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"libu2f-host","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.9-1"}]}]},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Desktop 12 SP4","package":"libu2f-host","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.6-3.5.1"}]}],"bundled":4},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Desktop 12 SP4","package":"pam_u2f","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.8-3.3.1"}]}],"bundled":4},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server 12 SP4","package":"libu2f-host","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.6-3.5.1"}]}],"bundled":4},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server 12 SP4","package":"pam_u2f","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.8-3.3.1"}]}],"bundled":4},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 12 SP4","package":"libu2f-host","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.6-3.5.1"}]}],"bundled":4},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 12 SP4","package":"pam_u2f","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.8-3.3.1"}]}],"bundled":4},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Module for Basesystem 15","package":"libu2f-host","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.6-3.6.1"}]}],"bundled":3},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Module for Basesystem 15","package":"pam_u2f","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.8-3.3.1"}]}],"bundled":3},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Module for Basesystem 15 SP1","package":"libu2f-host","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.6-3.6.1"}]}],"bundled":3},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Module for Basesystem 15 SP1","package":"pam_u2f","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.8-3.3.1"}]}],"bundled":3},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Module for Basesystem 15 SP2","package":"libu2f-host","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.10-3.9.1"}]}],"bundled":2},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Module for Basesystem 15 SP3","package":"libu2f-host","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.10-3.9.1"}]}],"bundled":2},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"libu2f-host","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0.4-1","1.0.0-1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"libu2f-host","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.3-1","1.1.4-1","1.1.4-1ubuntu0.1"]},{"source":"osv","ecosystem":"openSUSE:Leap 15.1","package":"libu2f-host","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.6-lp151.2.6.1"}]}],"bundled":3},{"source":"osv","ecosystem":"openSUSE:Leap 15.1","package":"pam_u2f","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.8-lp151.2.3.1"}]}],"bundled":3},{"source":"osv","ecosystem":"openSUSE:Leap 15.0","package":"libu2f-host","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.6-lp150.10.1"}]}],"bundled":3},{"source":"osv","ecosystem":"openSUSE:Leap 15.0","package":"pam_u2f","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.8-lp150.7.1"}]}],"bundled":3},{"source":"osv","ecosystem":"openSUSE:Leap 15.2","package":"libu2f-host","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.10-lp152.4.3.1"}]}],"bundled":2},{"source":"osv","ecosystem":"openSUSE:Leap 15.3","package":"libu2f-host","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.10-3.9.1"}]}],"bundled":2}],"products":[{"vendor":"yubico","product":"libu2f-host"}],"references":[{"url":"https://developers.yubico.com/libu2f-host/Release_Notes.html","tags":["x_refsource_MISC","x_transferred","Release Notes","Vendor Advisory","advisory","report"]},{"url":"https://github.com/Yubico/libu2f-host/commit/e4bb58cc8b6202a421e65f8230217d8ae6e16eb5","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","report"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S4YCFMSNMXZ7XC4U6WXPQA7JCXC6VOAJ/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GMA4H6AZFYIR3LA5VKKEJZNCCIVMUCFQ/","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00012.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","web"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00018.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","web"]},{"url":"https://blog.inhq.net/posts/yubico-libu2f-host-vuln-part2/","tags":["x_refsource_MISC","x_transferred","article"]},{"url":"https://security.gentoo.org/glsa/202004-15","tags":["vendor-advisory","x_refsource_GENTOO","x_transferred","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-9578"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GMA4H6AZFYIR3LA5VKKEJZNCCIVMUCFQ/"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/S4YCFMSNMXZ7XC4U6WXPQA7JCXC6VOAJ/"},{"url":"https://github.com/advisories/GHSA-6c8w-rwwq-6qqh"},{"url":"https://security-tracker.debian.org/tracker/CVE-2019-9578","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2019/suse-su-20191749-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1124781","tags":["report"]},{"url":"https://bugzilla.suse.com/1128140","tags":["report"]},{"url":"https://bugzilla.suse.com/1135727","tags":["report"]},{"url":"https://bugzilla.suse.com/1135729","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2018-20340","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2019-12209","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2019-12210","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2019-9578","tags":["web"]},{"url":"https://www.suse.com/support/update/announcement/2019/suse-su-20191750-1/","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2021/suse-su-20211755-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1184648","tags":["report"]},{"url":"https://ubuntu.com/security/CVE-2019-9578","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2019-9578","tags":["report"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/NLLQFQYZPMUPPGSELE2DVQUEBTEZRB3U/#NLLQFQYZPMUPPGSELE2DVQUEBTEZRB3U","tags":["advisory"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/7L2J54VOSWKWWHDQ3LUR6WDVPL2TE6XB/#7L2J54VOSWKWWHDQ3LUR6WDVPL2TE6XB","tags":["advisory"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/QRDOETNQVM5LVLJRZMNGQEBNRFW4ZWEV/","tags":["advisory"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/W6NOI7O3I53SFL6DVLZH5VWF6EO4AISA/","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2019-9578","description":"In devs.c in Yubico libu2f-host before 1.1.8, the response to init is misparsed, leaking uninitialized stack memory back to the device.","status":"published","published":"2019-03-05T23:00:00Z","modified":"2024-08-04T21:54:44.514Z","updated_at":"2026-11-02T14:20:20.081405Z"}],"euvd":[{"id":"EUVD-2019-18949","description":"In devs.c in Yubico libu2f-host before 1.1.8, the response to init is misparsed, leaking uninitialized stack memory back to the device.","status":"published","published":"2019-03-05T23:00:00Z","modified":"2024-08-04T21:54:44Z","updated_at":"2026-11-03T03:06:38.242317Z"}],"ghsa":[{"id":"GHSA-6c8w-rwwq-6qqh","title":"In devs.c in Yubico libu2f-host before 1.1.8, the response to init is misparsed, leaking...","description":"In devs.c in Yubico libu2f-host before 1.1.8, the response to init is misparsed, leaking uninitialized stack memory back to the device.","status":"published","published":"2022-05-13T01:23:04Z","modified":"2023-02-01T05:06:56Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-908"],"updated_at":"2026-11-02T14:50:27.414775Z"}],"nvd":[{"id":"CVE-2019-9578","description":"In devs.c in Yubico libu2f-host before 1.1.8, the response to init is misparsed, leaking uninitialized stack memory back to the device.","status":"published","published":"2019-03-05T23:29:02.943Z","modified":"2026-06-17T02:43:58.877Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/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-908"],"updated_at":"2026-11-02T14:05:07.268578Z"}],"osv":[{"id":"CVE-2019-9578","description":"In devs.c in Yubico libu2f-host before 1.1.8, the response to init is misparsed, leaking uninitialized stack memory back to the device.","status":"published","published":"2019-03-05T23:29:02.943Z","modified":"2026-10-20T13:53:00.966110037Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:12.974481Z"},{"id":"DEBIAN-CVE-2019-9578","description":"In devs.c in Yubico libu2f-host before 1.1.8, the response to init is misparsed, leaking uninitialized stack memory back to the device.","status":"published","published":"2019-03-05T23:29:02.943Z","modified":"2026-09-21T07:03:26.486309577Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:32.57265Z"},{"id":"UBUNTU-CVE-2019-9578","description":"In devs.c in Yubico libu2f-host before 1.1.8, the response to init is misparsed, leaking uninitialized stack memory back to the device.","status":"published","published":"2019-03-05T23:29:00Z","modified":"2026-04-22T12:23:59.947051Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:54:22.212782Z"},{"id":"openSUSE-SU-2019:1708-1","title":"Security update for libu2f-host, pam_u2f","description":"This update for libu2f-host and pam_u2f to version 1.0.8 fixes the following issues:\n\nSecurity issues fixed for libu2f-host: \n\n- CVE-2019-9578: Fixed a memory leak due to a wrong parse of init's response (bsc#1128140).\n\nSecurity issues fixed for pam_u2f:\n\n- CVE-2019-12209: Fixed an issue where symlinks in the user's directory were followed (bsc#1135729).\n- CVE-2019-12210: Fixed file descriptor leaks (bsc#1135727).\n\nThis update was imported from the SUSE:SLE-15:Update update project.","status":"published","published":"2019-07-19T05:59:24Z","modified":"2026-02-04T03:34:09.058983Z","updated_at":"2026-11-02T16:58:30.784344Z"},{"id":"openSUSE-SU-2019:1725-1","title":"Security update for libu2f-host, pam_u2f","description":"This update for libu2f-host and pam_u2f to version 1.0.8 fixes the following issues:\n\nSecurity issues fixed for libu2f-host: \n\n- CVE-2019-9578: Fixed a memory leak due to a wrong parse of init's response (bsc#1128140).\n\nSecurity issues fixed for pam_u2f:\n\n- CVE-2019-12209: Fixed an issue where symlinks in the user's directory were followed (bsc#1135729).\n- CVE-2019-12210: Fixed file descriptor leaks (bsc#1135727).\n\nThis update was imported from the SUSE:SLE-15:Update update project.","status":"published","published":"2019-07-19T15:59:26Z","modified":"2026-02-04T02:44:36.166528Z","updated_at":"2026-11-02T16:58:30.784344Z"},{"id":"openSUSE-SU-2021:0799-1","title":"Security update for libu2f-host","description":"This update for libu2f-host fixes the following issues:\n\nThis update ships the u2f-host package (jsc#ECO-3687 bsc#1184648)\n\nVersion 1.1.10 (released 2019-05-15)\n\n- Add new devices to udev rules.\n- Fix a potentially uninitialized buffer (CVE-2019-9578, bsc#1128140)\n\nVersion 1.1.9 (released 2019-03-06)\n\n- Fix CID copying from the init response, which broke compatibility with\nsome devices.\n\nVersion 1.1.8 (released 2019-03-05)\n\n- Add udev rules\n- Drop 70-old-u2f.rules and use 70-u2f.rules for everything\n- Use a random nonce for setting up CID to prevent fingerprinting\n- CVE-2019-9578: Parse the response to init in a more stable way to prevent\n  leakage of uninitialized stack memory back to the device (bsc#1128140).\n\nVersion 1.1.7 (released 2019-01-08)\n\n- Fix for trusting length from device in device init.\n- Fix for buffer overflow when receiving data from device. (YSA-2019-01,\n  CVE-2018-20340, bsc#1124781)\n- Add udev rules for some new devices.\n\n- Add udev rule for Feitian ePass FIDO \n  - Add a timeout to the register and authenticate actions.\nThis update was imported from the SUSE:SLE-15:Update update project.","status":"published","published":"2021-05-28T16:05:18Z","modified":"2026-02-04T03:33:37.109878Z","updated_at":"2026-11-02T16:58:31.879684Z"},{"id":"openSUSE-SU-2021:1755-1","title":"Security update for libu2f-host","description":"This update for libu2f-host fixes the following issues:\n\nThis update ships the u2f-host package (jsc#ECO-3687 bsc#1184648)\n\nVersion 1.1.10 (released 2019-05-15)\n\n- Add new devices to udev rules.\n- Fix a potentially uninitialized buffer (CVE-2019-9578, bsc#1128140)\n\nVersion 1.1.9 (released 2019-03-06)\n\n- Fix CID copying from the init response, which broke compatibility with\nsome devices.\n\nVersion 1.1.8 (released 2019-03-05)\n\n- Add udev rules\n- Drop 70-old-u2f.rules and use 70-u2f.rules for everything\n- Use a random nonce for setting up CID to prevent fingerprinting\n- CVE-2019-9578: Parse the response to init in a more stable way to prevent\n  leakage of uninitialized stack memory back to the device (bsc#1128140).\n\nVersion 1.1.7 (released 2019-01-08)\n\n- Fix for trusting length from device in device init.\n- Fix for buffer overflow when receiving data from device. (YSA-2019-01,\n  CVE-2018-20340, bsc#1124781)\n- Add udev rules for some new devices.\n\n- Add udev rule for Feitian ePass FIDO \n  - Add a timeout to the register and authenticate actions.","status":"published","published":"2021-07-10T18:57:28Z","modified":"2026-02-04T04:39:02.697116Z","updated_at":"2026-11-02T16:58:32.266854Z"},{"id":"SUSE-SU-2019:1749-1","title":"Security update for libu2f-host","description":"This update for libu2f-host and pam_u2f to version 1.0.8 fixes the following issues:\n\t  \nSecurity issues fixed for libu2f-host: \n\n- CVE-2019-9578: Fixed a memory leak due to a wrong parse of init's response (bsc#1128140).\n- CVE-2018-20340: Fixed an unchecked buffer, which could allow a buffer overflow \n  with a custom made malicious USB device (bsc#1124781).\n\nSecurity issues fixed for pam_u2f:\n\n- CVE-2019-12209: Fixed an issue where symlinks in the user's directory were followed (bsc#1135729).\n- CVE-2019-12210: Fixed file descriptor leaks (bsc#1135727).\n","status":"published","published":"2019-07-04T14:06:56Z","modified":"2026-02-04T04:38:13.599936Z","updated_at":"2026-11-02T15:53:46.44301Z"},{"id":"SUSE-SU-2019:1750-1","title":"Security update for libu2f-host, pam_u2f","description":"This update for libu2f-host and pam_u2f to version 1.0.8 fixes the following issues:\n\nSecurity issues fixed for libu2f-host: \n\n- CVE-2019-9578: Fixed a memory leak due to a wrong parse of init's response (bsc#1128140).\n\nSecurity issues fixed for pam_u2f:\n\n- CVE-2019-12209: Fixed an issue where symlinks in the user's directory were followed (bsc#1135729).\n- CVE-2019-12210: Fixed file descriptor leaks (bsc#1135727).\n","status":"published","published":"2019-07-04T14:07:36Z","modified":"2026-02-04T04:26:02.290757Z","updated_at":"2026-11-02T15:53:46.44301Z"},{"id":"SUSE-SU-2021:1755-1","title":"Security update for libu2f-host","description":"This update for libu2f-host fixes the following issues:\n\nThis update ships the u2f-host package (jsc#ECO-3687 bsc#1184648)\n\nVersion 1.1.10 (released 2019-05-15)\n\n- Add new devices to udev rules.\n- Fix a potentially uninitialized buffer (CVE-2019-9578, bsc#1128140)\n\nVersion 1.1.9 (released 2019-03-06)\n\n- Fix CID copying from the init response, which broke compatibility with\nsome devices.\n\nVersion 1.1.8 (released 2019-03-05)\n\n- Add udev rules\n- Drop 70-old-u2f.rules and use 70-u2f.rules for everything\n- Use a random nonce for setting up CID to prevent fingerprinting\n- CVE-2019-9578: Parse the response to init in a more stable way to prevent\n  leakage of uninitialized stack memory back to the device (bsc#1128140).\n\nVersion 1.1.7 (released 2019-01-08)\n\n- Fix for trusting length from device in device init.\n- Fix for buffer overflow when receiving data from device. (YSA-2019-01,\n  CVE-2018-20340, bsc#1124781)\n- Add udev rules for some new devices.\n\n- Add udev rule for Feitian ePass FIDO \n  - Add a timeout to the register and authenticate actions.","status":"published","published":"2021-05-25T11:30:09Z","modified":"2026-02-04T02:59:35.429606Z","updated_at":"2026-11-02T15:53:49.138643Z"}]}}