{"id":"CVE-2019-12904","title":"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","summary":"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 im…","severity":"medium","cvss":5.9,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","cwe":["CWE-668"],"vendor":"gnupg","product":"libgcrypt","affected":["libgcrypt = 1.8.4","leap = 15.0"],"published":"2019-06-20","updated":"2026-10-14","sourceUpdated":"2026-10-14T07:16:45.870","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2019-12904","references":[{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00049.html","label":"cve@mitre.org"},{"url":"https://dev.gnupg.org/T4541","label":"cve@mitre.org"},{"url":"https://github.com/gpg/libgcrypt/commit/a4c561aab1014c3630bc88faf6f5246fee16b020","label":"cve@mitre.org"},{"url":"https://github.com/gpg/libgcrypt/commit/daedbbb5541cd8ecda1459d3b843ea4d92788762","label":"cve@mitre.org"},{"url":"https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E","label":"cve@mitre.org"},{"url":"http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00049.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://dev.gnupg.org/T4541","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/gpg/libgcrypt/commit/a4c561aab1014c3630bc88faf6f5246fee16b020","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/gpg/libgcrypt/commit/daedbbb5541cd8ecda1459d3b843ea4d92788762","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-398330.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd","cve.org"],"epss":0.02063,"epssPercentile":0.80868,"ingestedAt":"2026-10-14T07:21:04.815Z","slug":"CVE-2019-12904","body":"## Overview\n\nIn 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\n\n## Affected\n\n- `libgcrypt = 1.8.4`\n- `leap = 15.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":33,"depthScoreParts":{"impact":32.5,"likelihood":0.4,"exploitation":0,"ransomware":0},"changes":[]}