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{"bugzilla": {"description": "libgcrypt: Possible timing attack on EdDSA session key", "id": "1459887", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1459887"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.9", "cvss3_scoring_vector": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N", "status": "draft"}, "cwe": "CWE-385", "details": ["In Libgcrypt before 1.7.7, an attacker who learns the EdDSA session key (from side-channel observation during the signing process) can easily recover the long-term secret key. 1.7.7 makes a cipher/ecc-eddsa.c change to store this session key in secure memory, to ensure that constant-time point operations are used in the MPI library."], "name": "CVE-2017-9526", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "libgcrypt", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "libgcrypt", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "libgcrypt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/a:redhat:enterprise_linux:7::hypervisor", "fix_state": "Not affected", "package_name": "mingw-virt-viewer", "product_name": "Red Hat Enterprise Virtualization 3"}], "public_date": "2017-06-01T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2017-9526\nhttps://nvd.nist.gov/vuln/detail/CVE-2017-9526"], "statement": "This issue did not affect the versions of libgcrypt as shipped with Red Hat Enterprise Linux 5, 6 and 7 as they did not include support for EdDSA cipher.", "threat_severity": "Low", "upstream_fix": "libgcrypt 1.7.7"}