CVE-2015-0837

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{"affected": [{"affectedData": [{"product": "Libgcrypt", "vendor": "GNU", "versions": [{"status": "affected", "version": "before 1.6.3"}]}, {"product": "GnuPG", "vendor": "GNU", "versions": [{"status": "affected", "version": "before 1.4.19"}]}], "source": "security@debian.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:gnupg:gnupg:*:*:*:*:*:*:*:*", "matchCriteriaId": "8A7A4C18-6BE6-437E-81AD-C4AD73A78038", "versionEndExcluding": "1.4.19", "vulnerable": true}, {"criteria": "cpe:2.3:a:gnupg:libgcrypt:*:*:*:*:*:*:*:*", "matchCriteriaId": "840D7B26-0812-45F3-803A-B24F7D843364", "versionEndExcluding": "1.6.3", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*", "matchCriteriaId": "16F59A04-14CF-49E2-9973-645477EA09DA", "vulnerable": true}, {"criteria": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*", "matchCriteriaId": "C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The mpi_powm function in Libgcrypt before 1.6.3 and GnuPG before 1.4.19 allows attackers to obtain sensitive information by leveraging timing differences when accessing a pre-computed table during modular exponentiation, related to a \"Last-Level Cache Side-Channel Attack.\""}, {"lang": "es", "value": "La funci\u00f3n mpi_powm en Libgcrypt versiones anteriores a 1.6.3 y GnuPG versiones anteriores a 1.4.19, permite a atacantes obtener informaci\u00f3n confidencial mediante el aprovechamiento de las diferencias de tiempo al acceder a una tabla precalculada durante una exponenciaci\u00f3n modular, relacionada con un \"Last-Level Cache Side-Channel Attack\"."}], "id": "CVE-2015-0837", "lastModified": "2026-06-17T00:21:00.530", "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}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2019-11-29T22:15:11.783", "references": [{"source": "security@debian.org", "tags": ["Third Party Advisory"], "url": "http://www.debian.org/security/2015/dsa-3184"}, {"source": "security@debian.org", "tags": ["Third Party Advisory"], "url": "http://www.debian.org/security/2015/dsa-3185"}, {"source": "security@debian.org", "tags": ["Third Party Advisory"], "url": "https://ieeexplore.ieee.org/document/7163050"}, {"source": "security@debian.org", "tags": ["Mailing List", "Vendor Advisory"], "url": "https://lists.gnupg.org/pipermail/gnupg-announce/2015q1/000363.html"}, {"source": "security@debian.org", "tags": ["Mailing List", "Vendor Advisory"], "url": "https://lists.gnupg.org/pipermail/gnupg-announce/2015q1/000364.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "http://www.debian.org/security/2015/dsa-3184"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "http://www.debian.org/security/2015/dsa-3185"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://ieeexplore.ieee.org/document/7163050"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Vendor Advisory"], "url": "https://lists.gnupg.org/pipermail/gnupg-announce/2015q1/000363.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Vendor Advisory"], "url": "https://lists.gnupg.org/pipermail/gnupg-announce/2015q1/000364.html"}], "sourceIdentifier": "security@debian.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-203"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "libgcrypt: last-level cache side-channel attack", "id": "1198147", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1198147"}, "csaw": false, "cvss": {"cvss_base_score": "1.2", "cvss_scoring_vector": "AV:L/AC:H/Au:N/C:P/I:N/A:N", "status": "draft"}, "details": ["The mpi_powm function in Libgcrypt before 1.6.3 and GnuPG before 1.4.19 allows attackers to obtain sensitive information by leveraging timing differences when accessing a pre-computed table during modular exponentiation, related to a \"Last-Level Cache Side-Channel Attack.\""], "name": "CVE-2015-0837", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Will not fix", "package_name": "gnupg", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Will not fix", "package_name": "gnupg2", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Will not fix", "package_name": "libgcrypt", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Will not fix", "package_name": "gnupg2", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Will not fix", "package_name": "libgcrypt", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Will not fix", "package_name": "gnupg2", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Will not fix", "package_name": "libgcrypt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/a:redhat:enterprise_linux:7::hypervisor", "fix_state": "Fix deferred", "package_name": "mingw-virt-viewer", "product_name": "Red Hat Enterprise Virtualization 3"}], "public_date": "2015-02-27T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2015-0837\nhttps://nvd.nist.gov/vuln/detail/CVE-2015-0837"], "statement": "Red Hat Product Security has rated this issue as having low security impact, a future update may address this flaw in the libgcrypt and gnupg2 packages.\nThe attack leading to this flaw, is difficult to conduct in practice especially for cross-vm environments, mainly because the attacker needs to run their timing attack script at the exact same time decryption runs on the victim machine. Also this is essentially a chosen ciphertext attack because the attacker provides the ciphertext which the victim needs to be decrypt. Such actions only work when there is sufficient social engineer involved.", "threat_severity": "Low"}

{}