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{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:*", "matchCriteriaId": "14922F88-7D7E-442F-A1FF-15B7A2745B6C", "versionEndIncluding": "2.31", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*", "matchCriteriaId": "80F0FA5D-8D3B-4C0E-81E2-87998286AF33", "vulnerable": true}, {"criteria": "cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*", "matchCriteriaId": "36D96259-24BD-44E2-96D9-78CE1D41F956", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*", "matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "An exploitable signed comparison vulnerability exists in the ARMv7 memcpy() implementation of GNU glibc 2.30.9000. Calling memcpy() (on ARMv7 targets that utilize the GNU glibc implementation) with a negative value for the 'num' parameter results in a signed comparison vulnerability. If an attacker underflows the 'num' parameter to memcpy(), this vulnerability could lead to undefined behavior such as writing to out-of-bounds memory and potentially remote code execution. Furthermore, this memcpy() implementation allows for program execution to continue in scenarios where a segmentation fault or crash should have occurred. The dangers occur in that subsequent execution and iterations of this code will be executed with this corrupted data."}, {"lang": "es", "value": "Se presenta una vulnerabilidad de comparaci\u00f3n firmada explotable en la implementaci\u00f3n de la funci\u00f3n memcpy() de ARMv7 de GNU glibc versi\u00f3n 2.30.9000. Llamar a la funci\u00f3n memcpy() (en objetivos ARMv7 que utilizan la implementaci\u00f3n GNU glibc) con un valor negativo para el par\u00e1metro \"num\" resulta en una vulnerabilidad de comparaci\u00f3n firmada. Si un atacante desborda el par\u00e1metro \"num\" en la funci\u00f3n memcpy(), esta vulnerabilidad podr\u00eda conllevar a un comportamiento indefinido, como escribir en la memoria fuera de l\u00edmites y una potencial ejecuci\u00f3n de c\u00f3digo remota. Adem\u00e1s, esta implementaci\u00f3n de la funci\u00f3n memcpy() permite que la ejecuci\u00f3n del programa contin\u00fae en escenarios donde un fallo de segmentaci\u00f3n o bloqueo deber\u00eda haberse producido. Los peligros se presentan en que la ejecuci\u00f3n posterior y las iteraciones de este c\u00f3digo son ejecutadas con estos datos corruptos."}], "id": "CVE-2020-6096", "lastModified": "2023-11-07T03:24:12.097", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 6.8, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.0"}, "exploitabilityScore": 2.2, "impactScore": 5.9, "source": "talos-cna@cisco.com", "type": "Secondary"}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2020-04-01T22:15:18.503", "references": [{"source": "talos-cna@cisco.com", "url": "https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E"}, {"source": "talos-cna@cisco.com", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2022/10/msg00021.html"}, {"source": "talos-cna@cisco.com", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SPYXTDOOB4PQGTYAMZAZNJIB3FF6YQXI/"}, {"source": "talos-cna@cisco.com", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/URXOIA2LDUKHQXK4BE55BQBRI6ZZG3Y6/"}, {"source": "talos-cna@cisco.com", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202101-20"}, {"source": "talos-cna@cisco.com", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://sourceware.org/bugzilla/show_bug.cgi?id=25620"}, {"source": "talos-cna@cisco.com", "tags": ["Third Party Advisory"], "url": "https://www.talosintelligence.com/vulnerability_reports/TALOS-2020-1019"}], "sourceIdentifier": "talos-cna@cisco.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-195"}], "source": "talos-cna@cisco.com", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-191"}, {"lang": "en", "value": "CWE-681"}], "source": "nvd@nist.gov", "type": "Secondary"}]}

{"bugzilla": {"description": "glibc: signed comparison vulnerability in the ARMv7 memcpy function", "id": "1820331", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1820331"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.1", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-190", "details": ["An exploitable signed comparison vulnerability exists in the ARMv7 memcpy() implementation of GNU glibc 2.30.9000. Calling memcpy() (on ARMv7 targets that utilize the GNU glibc implementation) with a negative value for the 'num' parameter results in a signed comparison vulnerability. If an attacker underflows the 'num' parameter to memcpy(), this vulnerability could lead to undefined behavior such as writing to out-of-bounds memory and potentially remote code execution. Furthermore, this memcpy() implementation allows for program execution to continue in scenarios where a segmentation fault or crash should have occurred. The dangers occur in that subsequent execution and iterations of this code will be executed with this corrupted data.", "A signed comparison vulnerability was found in GNU libc in the ARMv7 implementation of memcpy(). The flaw affects the third argument to memcpy() that specifies the number of bytes to copy. An underflow on the third argument could lead to undefined behavior such as out-of-bounds memory write and potentially remote code execution."], "name": "CVE-2020-6096", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "glibc", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "glibc", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "glibc", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "glibc", "product_name": "Red Hat Enterprise Linux 8"}], "public_date": "2020-03-02T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2020-6096\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-6096\nhttps://sourceware.org/bugzilla/attachment.cgi?id=12334"], "statement": "Red Hat Enterprise Linux only supports the 64-bit ARM architecture (AArch64) which does not include the vulnerable implementation of `memcpy()`. Therefore, all versions of glibc as shipped with RHEL are not affected by this flaw.", "threat_severity": "Moderate", "upstream_fix": "glibc 2.32"}