CVE-2017-8932

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An adaptive attack can be mounted to progressively extract the scalar input to ScalarMult by submitting crafted points and observing failures to the derive correct output. 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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*", "matchCriteriaId": "8244E4BF-E822-40BF-B436-35B073514530", "versionEndIncluding": "1.7.5", "vulnerable": true}, {"criteria": "cpe:2.3:a:golang:go:1.8:*:*:*:*:*:*:*", "matchCriteriaId": "19B9EAD3-EF36-4F95-8DB4-9FB8E19CC0D0", "vulnerable": true}, {"criteria": "cpe:2.3:a:golang:go:1.8.1:*:*:*:*:*:*:*", "matchCriteriaId": "A0DC2B77-B2C2-41AE-B51E-A766C79AA00F", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:novell:suse_package_hub_for_suse_linux_enterprise:12:*:*:*:*:*:*:*", "matchCriteriaId": "B5BEF8F1-A70F-455C-BFDD-09E0A658F702", "vulnerable": true}, {"criteria": "cpe:2.3:o:fedoraproject:fedora:25:*:*:*:*:*:*:*", "matchCriteriaId": "772E9557-A371-4664-AE2D-4135AAEB89AA", "vulnerable": true}, {"criteria": "cpe:2.3:o:opensuse:leap:42.2:*:*:*:*:*:*:*", "matchCriteriaId": "1EA337A3-B9A3-4962-B8BD-8E0C7C5B28EB", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A bug in the standard library ScalarMult implementation of curve P-256 for amd64 architectures in Go before 1.7.6 and 1.8.x before 1.8.2 causes incorrect results to be generated for specific input points. An adaptive attack can be mounted to progressively extract the scalar input to ScalarMult by submitting crafted points and observing failures to the derive correct output. This leads to a full key recovery attack against static ECDH, as used in popular JWT libraries."}, {"lang": "es", "value": "Un error en la implementaci\u00f3n de la biblioteca est\u00e1ndar ScalarMult de curve P-256 para arquitecturas amd64 en Go anterior a versi\u00f3n 1.7.6 y 1.8.x anterior a versi\u00f3n 1.8.2, causa resultados incorrectos para ser generados por puntos de entrada espec\u00edficos. Se puede montar un ataque adaptativo para extraer progresivamente la entrada scalar hacia ScalarMult mediante el env\u00edo de puntos creados y observando fallos para la salida correcta derivada. Esto conduce a un ataque de recuperaci\u00f3n de clave completa contra ECDH est\u00e1tico, tal y como es usado en las bibliotecas populares JWT."}], "id": "CVE-2017-8932", "lastModified": "2026-06-17T01:27:13.483", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 4.3, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.0"}, "exploitabilityScore": 2.2, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2017-07-06T16:29:00.420", "references": [{"source": "cve@mitre.org", "tags": ["Patch", "Third Party Advisory"], "url": "http://lists.opensuse.org/opensuse-updates/2017-06/msg00079.html"}, {"source": "cve@mitre.org", "tags": ["Patch", "Third Party Advisory"], "url": "http://lists.opensuse.org/opensuse-updates/2017-06/msg00080.html"}, {"source": "cve@mitre.org", "url": "https://access.redhat.com/errata/RHSA-2017:1859"}, {"source": "cve@mitre.org", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1455191"}, {"source": "cve@mitre.org", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "url": "https://github.com/golang/go/commit/9294fa2749ffee7edbbb817a0ef9fe633136fa9c"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://github.com/golang/go/issues/20040"}, {"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": "https://go-review.googlesource.com/c/41070/"}, {"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": "https://groups.google.com/d/msg/golang-announce/B5ww0iFt1_Q/TgUFJV14BgAJ"}, {"source": "cve@mitre.org", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LZH4T47ROLZ6YEZBDVXVS2KISTDMXAPS/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "http://lists.opensuse.org/opensuse-updates/2017-06/msg00079.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "http://lists.opensuse.org/opensuse-updates/2017-06/msg00080.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://access.redhat.com/errata/RHSA-2017:1859"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1455191"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Patch", "Third Party Advisory"], "url": "https://github.com/golang/go/commit/9294fa2749ffee7edbbb817a0ef9fe633136fa9c"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://github.com/golang/go/issues/20040"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://go-review.googlesource.com/c/41070/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://groups.google.com/d/msg/golang-announce/B5ww0iFt1_Q/TgUFJV14BgAJ"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LZH4T47ROLZ6YEZBDVXVS2KISTDMXAPS/"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-682"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2017:1859", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "golang-0:1.8.3-1.el7", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2017-08-01T00:00:00Z"}], "bugzilla": {"description": "golang: Elliptic curves carry propagation issue in x86-64 P-256", "id": "1455189", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1455189"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.8", "cvss3_scoring_vector": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N", "status": "verified"}, "cwe": "CWE-682", "details": ["A bug in the standard library ScalarMult implementation of curve P-256 for amd64 architectures in Go before 1.7.6 and 1.8.x before 1.8.2 causes incorrect results to be generated for specific input points. An adaptive attack can be mounted to progressively extract the scalar input to ScalarMult by submitting crafted points and observing failures to the derive correct output. This leads to a full key recovery attack against static ECDH, as used in popular JWT libraries.", "A carry propagation flaw was found in the implementation of the P-256 elliptic curve in golang. An attacker could possibly use this flaw to extract private keys when static ECDH was used."], "name": "CVE-2017-8932", "package_state": [{"cpe": "cpe:/a:redhat:openshift:3", "fix_state": "Under investigation", "package_name": "golang", "product_name": "Red Hat OpenShift Enterprise 3"}, {"cpe": "cpe:/a:redhat:openstack-optools:8", "fix_state": "Will not fix", "package_name": "golang", "product_name": "Red Hat OpenStack Platform 8 (Liberty) Operational Tools"}, {"cpe": "cpe:/a:redhat:openstack-optools:9", "fix_state": "Will not fix", "package_name": "golang", "product_name": "Red Hat OpenStack Platform 9 (Mitaka) Operational Tools"}], "public_date": "2017-05-23T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2017-8932\nhttps://nvd.nist.gov/vuln/detail/CVE-2017-8932"], "threat_severity": "Moderate"}

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