{"id":"CVE-2019-12904","aliases":["ALPINE-CVE-2019-12904","BELL-CVE-2019-12904","EUVD-2019-4482","GHSA-w862-39x5-q88x","SUSE-SU-2019:1859-1","SUSE-SU-2019:1971-1","openSUSE-SU-2019:1792-1","openSUSE-SU-2024:10941-1"],"status":"disputed","title":"In Libgcrypt 1.8.4, the C implementation of AES is vulnerable to a flush-and-reload side-channel...","description":"In Libgcrypt 1.8.4, the C implementation of AES is vulnerable to a flush-and-reload side-channel attack because physical addresses are available to other processes. (The C implementation is used on platforms where an assembly-language implementation is unavailable.) NOTE: the vendor's position is that the issue report cannot be validated because there is no description of an attack","severity":{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.02211,"percentile":0.82724,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-668"],"published":"2019-06-19T23:34:13Z","modified":"2026-10-24T14:19:52Z","fixes":[{"ecosystem":"Alpine:v3.10","package":"libgcrypt","fixed_in":["1.8.4-r2"],"sources":["osv"]},{"ecosystem":"Alpine:v3.11","package":"libgcrypt","fixed_in":["1.8.4-r2"],"sources":["osv"]},{"ecosystem":"Alpine:v3.12","package":"libgcrypt","fixed_in":["1.8.4-r2"],"sources":["osv"]},{"ecosystem":"Alpine:v3.13","package":"libgcrypt","fixed_in":["1.8.4-r2"],"sources":["osv"]},{"ecosystem":"Alpine:v3.14","package":"libgcrypt","fixed_in":["1.8.4-r2"],"sources":["osv"]},{"ecosystem":"Alpine:v3.15","package":"libgcrypt","fixed_in":["1.8.4-r2"],"sources":["osv"]},{"ecosystem":"Alpine:v3.16","package":"libgcrypt","fixed_in":["1.8.4-r2"],"sources":["osv"]},{"ecosystem":"Alpine:v3.17","package":"libgcrypt","fixed_in":["1.8.4-r2"],"sources":["osv"]},{"ecosystem":"Alpine:v3.18","package":"libgcrypt","fixed_in":["1.8.4-r2"],"sources":["osv"]},{"ecosystem":"Alpine:v3.19","package":"libgcrypt","fixed_in":["1.8.4-r2"],"sources":["osv"]},{"ecosystem":"Alpine:v3.20","package":"libgcrypt","fixed_in":["1.8.4-r2"],"sources":["osv"]},{"ecosystem":"Alpine:v3.21","package":"libgcrypt","fixed_in":["1.8.4-r2"],"sources":["osv"]},{"ecosystem":"Alpine:v3.22","package":"libgcrypt","fixed_in":["1.8.4-r2"],"sources":["osv"]},{"ecosystem":"Alpine:v3.23","package":"libgcrypt","fixed_in":["1.8.4-r2"],"sources":["osv"]},{"ecosystem":"Alpine:v3.24","package":"libgcrypt","fixed_in":["1.8.4-r2"],"sources":["osv"]},{"ecosystem":"Alpine:v3.7","package":"libgcrypt","fixed_in":["1.8.3-r1"],"sources":["osv"]},{"ecosystem":"Alpine:v3.8","package":"libgcrypt","fixed_in":["1.8.3-r1"],"sources":["osv"]},{"ecosystem":"Alpine:v3.9","package":"libgcrypt","fixed_in":["1.8.4-r1"],"sources":["osv"]},{"ecosystem":"SUSE:Linux Enterprise Module for Basesystem 15","package":"libgcrypt","fixed_in":["1.8.2-6.17.1"],"sources":["osv"]},{"ecosystem":"SUSE:Linux Enterprise Module for Basesystem 15 SP1","package":"libgcrypt","fixed_in":["1.8.2-8.6.2"],"sources":["osv"]},{"ecosystem":"openSUSE:Leap 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Enterprise Module for Basesystem 15","package":"libgcrypt","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.8.2-6.17.1"}]}]},{"source":"osv","ecosystem":"SUSE:Linux Enterprise Module for Basesystem 15 SP1","package":"libgcrypt","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.8.2-8.6.2"}]}]},{"source":"osv","ecosystem":"openSUSE:Leap 15.0","package":"libgcrypt","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.8.2-lp150.5.10.1"}]}]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"libgcrypt","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.9.4-1.2"}]}],"bundled":7}],"products":[{"vendor":"gnupg","product":"libgcrypt"},{"vendor":"opensuse","product":"leap"},{"vendor":"siemens","product":"simatic s7-1500 cpu 1518-4 pn/dp mfp"},{"vendor":"siemens","product":"simatic s7-1500 cpu 1518f-4 pn/dp mfp"},{"vendor":"siemens","product":"siplus s7-1500 cpu 1518-4 pn/dp mfp"}],"references":[{"url":"https://dev.gnupg.org/T4541","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory"]},{"url":"https://github.com/gpg/libgcrypt/commit/daedbbb5541cd8ecda1459d3b843ea4d92788762","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix"]},{"url":"https://github.com/gpg/libgcrypt/commit/a4c561aab1014c3630bc88faf6f5246fee16b020","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix"]},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00049.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","Mailing List","Third Party Advisory","advisory"]},{"url":"https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E","tags":["mailing-list","x_refsource_MLIST","x_transferred","web"]},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-398330.html","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-12904"},{"url":"https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772@%3Cdev.mina.apache.org%3E"},{"url":"https://github.com/advisories/GHSA-w862-39x5-q88x"},{"url":"https://security.alpinelinux.org/vuln/CVE-2019-12904","tags":["advisory"]},{"url":"https://docs.bell-sw.com/security/cves/CVE-2019-12904","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2019/suse-su-20191859-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1097073","tags":["report"]},{"url":"https://bugzilla.suse.com/1125740","tags":["report"]},{"url":"https://bugzilla.suse.com/1138939","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2019-12904","tags":["web"]},{"url":"https://www.suse.com/support/update/announcement/2019/suse-su-20191971-1/","tags":["advisory"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/UGEWFAF5J7VQL4GHXAYUK44DD2MT4ZUY/#UGEWFAF5J7VQL4GHXAYUK44DD2MT4ZUY","tags":["advisory"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2017-0379","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2017-7526","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-0495","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2019-13627","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2021-3345","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2021-33560","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2019-12904","description":"In Libgcrypt 1.8.4, the C implementation of AES is vulnerable to a flush-and-reload side-channel attack because physical addresses are available to other processes. (The C implementation is used on platforms where an assembly-language implementation is unavailable.) NOTE: the vendor's position is that the issue report cannot be validated because there is no description of an attack","status":"disputed","published":"2019-06-19T23:34:13Z","modified":"2026-10-14T06:50:02.025Z","updated_at":"2026-11-02T14:20:24.025419Z"}],"euvd":[{"id":"EUVD-2019-4482","description":"In Libgcrypt 1.8.4, the C implementation of AES is vulnerable to a flush-and-reload side-channel attack because physical addresses are available to other processes. (The C implementation is used on platforms where an assembly-language implementation is unavailable.) NOTE: the vendor's position is that the issue report cannot be validated because there is no description of an attack","status":"published","published":"2019-06-19T23:34:13Z","modified":"2026-10-14T06:50:02Z","updated_at":"2026-11-02T17:27:17.374818Z"}],"ghsa":[{"id":"GHSA-w862-39x5-q88x","title":"In Libgcrypt 1.8.4, the C implementation of AES is vulnerable to a flush-and-reload side-channel...","description":"In Libgcrypt 1.8.4, the C implementation of AES is vulnerable to a flush-and-reload side-channel attack because physical addresses are available to other processes. (The C implementation is used on platforms where an assembly-language implementation is unavailable.)","status":"published","published":"2022-05-24T16:48:28Z","modified":"2026-10-14T09:31:22Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-668"],"updated_at":"2026-11-02T15:13:22.867821Z"}],"nvd":[{"id":"CVE-2019-12904","description":"In Libgcrypt 1.8.4, the C implementation of AES is vulnerable to a flush-and-reload side-channel attack because physical addresses are available to other processes. (The C implementation is used on platforms where an assembly-language implementation is unavailable.) NOTE: the vendor's position is that the issue report cannot be validated because there is no description of an attack","status":"disputed","published":"2019-06-20T00:15:10.667Z","modified":"2026-10-14T07:16:45.87Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-668"],"updated_at":"2026-11-02T14:05:17.695191Z"}],"osv":[{"id":"ALPINE-CVE-2019-12904","description":"In Libgcrypt 1.8.4, the C implementation of AES is vulnerable to a flush-and-reload side-channel attack because physical addresses are available to other processes. (The C implementation is used on platforms where an assembly-language implementation is unavailable.) NOTE: the vendor's position is that the issue report cannot be validated because there is no description of an attack","status":"published","published":"2019-06-20T00:15:10.667Z","modified":"2026-09-21T06:17:52.468441611Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:27:47.663013Z"},{"id":"BELL-CVE-2019-12904","title":"CVE-2019-12904 does not affect BellSoft software","status":"withdrawn","published":"2023-08-31T12:15:02.183037Z","modified":"2026-09-04T07:15:22.729355402Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:28:15.340685Z"},{"id":"CVE-2019-12904","description":"In Libgcrypt 1.8.4, the C implementation of AES is vulnerable to a flush-and-reload side-channel attack because physical addresses are available to other processes. (The C implementation is used on platforms where an assembly-language implementation is unavailable.) NOTE: the vendor's position is that the issue report cannot be validated because there is no description of an attack","status":"published","published":"2019-06-20T00:15:10.667Z","modified":"2026-10-24T14:19:52.991976721Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:10.718934Z"},{"id":"openSUSE-SU-2019:1792-1","title":"Security update for libgcrypt","description":"This update for libgcrypt fixes the following issues:\n\nSecurity issues fixed:\n\n- CVE-2019-12904: The C implementation of AES is vulnerable to a flush-and-reload side-channel attack because physical addresses are available to other processes. (The C implementation is used on platforms where an assembly-language implementation is unavailable.) (bsc#1138939)\n\nOther bugfixes:\n\n- Don't run full FIPS self-tests from constructor (bsc#1097073)\n- Skip all the self-tests except for binary integrity when called\n  from the constructor (bsc#1097073)\n- Enforce the minimal RSA keygen size in fips mode (bsc#1125740)\n- avoid executing some tests twice.\n- Fixed a race condition in initialization.\n- Fixed env-script-interpreter in cavs_driver.pl\n- Fixed redundant fips tests in some situations causing failure to boot in\n  fips mode. (bsc#1097073)\n\nThis helps during booting of the system in FIPS mode with insufficient entropy.\n\nThis update was imported from the SUSE:SLE-15:Update update project.","status":"published","published":"2019-07-23T11:22:20Z","modified":"2026-02-04T02:13:59.103902Z","updated_at":"2026-11-02T16:58:30.784344Z"},{"id":"openSUSE-SU-2024:10941-1","title":"libgcrypt-cavs-1.9.4-1.2 on GA media","description":"These are all security issues fixed in the libgcrypt-cavs-1.9.4-1.2 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T02:35:52.263076Z","updated_at":"2026-11-02T16:58:34.894275Z"},{"id":"SUSE-SU-2019:1859-1","title":"Security update for libgcrypt","description":"This update for libgcrypt fixes the following issues:\n\nSecurity issues fixed:\n\n- CVE-2019-12904: The C implementation of AES is vulnerable to a flush-and-reload side-channel attack because physical addresses are available to other processes. (The C implementation is used on platforms where an assembly-language implementation is unavailable.) (bsc#1138939)\n\nOther bugfixes:\n\n- Don't run full FIPS self-tests from constructor (bsc#1097073)\n- Skip all the self-tests except for binary integrity when called\n  from the constructor (bsc#1097073)\n- Enforce the minimal RSA keygen size in fips mode (bsc#1125740)\n- avoid executing some tests twice.\n- Fixed a race condition in initialization.\n- Fixed env-script-interpreter in cavs_driver.pl\n- Fixed redundant fips tests in some situations causing failure to boot in\n  fips mode. (bsc#1097073)\n\nThis helps during booting of the system in FIPS mode with insufficient entropy.\n","status":"published","published":"2019-07-16T11:08:50Z","modified":"2026-02-04T04:06:17.398238Z","updated_at":"2026-11-02T15:53:46.44301Z"},{"id":"SUSE-SU-2019:1971-1","title":"Security update for libgcrypt","description":"This update for libgcrypt fixes the following issues:\n\nSecurity issue fixed:\n\n- CVE-2019-12904: Fixed a flush-and-reload side-channel attack in the AES implementation (bsc#1138939).\n","status":"published","published":"2019-07-25T12:58:56Z","modified":"2026-02-04T03:23:39.146356Z","updated_at":"2026-11-02T15:53:46.44301Z"}]}}