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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:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "963760A5-E70C-4DCA-9591-5F9EF9A86DD4", "versionEndExcluding": "4.14.86", "versionStartIncluding": "4.13", "vulnerable": true}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "488F0381-2160-4FCD-BAC4-5FB80A160776", "versionEndExcluding": "4.15.8", "versionStartIncluding": "4.15", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The tcp_v6_syn_recv_sock function in net/ipv6/tcp_ipv6.c in the Linux kernel through 4.14.11 allows attackers to cause a denial of service (slab out-of-bounds write) or possibly have unspecified other impact via vectors involving TLS."}, {"lang": "es", "value": "La funci\u00f3n tcp_v6_syn_recv_sock en net/ipv6/tcp_ipv6.c en el kernel de Linux, en versiones hasta la 4.14.11, permite que los atacantes provoquen una denegaci\u00f3n de servicio (escritura fuera de l\u00edmites del bloque) o, posiblemente, causen otros impactos no especificados mediante vectores relacionados con TLS."}], "id": "CVE-2018-5703", "lastModified": "2026-06-17T02:00:37.523", "metrics": {"cvssMetricV2": [{"acInsufInfo": true, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 10.0, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:N/AC:L/Au:N/C:C/I:C/A:C", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 10.0, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2018-01-16T09:29:00.420", "references": [{"source": "cve@mitre.org", "tags": ["Issue Tracking", "Mailing List", "Third Party Advisory"], "url": "https://groups.google.com/d/msg/syzkaller-bugs/0PBeVnSzfqQ/5eXAlM46BQAJ"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Mailing List", "Third Party Advisory"], "url": "https://groups.google.com/d/msg/syzkaller-bugs/0PBeVnSzfqQ/5eXAlM46BQAJ"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-787"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: net/ipv6/tcp_ipv6.c: tcp_v6_syn_recv_sock function allows attackers to cause a denial of service", "id": "1535110", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1535110"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.5", "cvss3_scoring_vector": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-787", "details": ["The tcp_v6_syn_recv_sock function in net/ipv6/tcp_ipv6.c in the Linux kernel through 4.14.11 allows attackers to cause a denial of service (slab out-of-bounds write) or possibly have unspecified other impact via vectors involving TLS.", "The tcp_v6_syn_recv_sock function in net/ipv6/tcp_ipv6.c in the Linux kernel, through 4.14.11, allows attackers to cause a denial of service (slab out-of-bounds write) or possibly have unspecified other impact via vectors involving in-kernel TLS implementation. Due to the nature of the flaw, privilege escalation cannot be fully ruled out, although we believe it is unlikely."], "name": "CVE-2018-5703", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-alt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/a:redhat:enterprise_mrg:2", "fix_state": "Not affected", "package_name": "realtime-kernel", "product_name": "Red Hat Enterprise MRG 2"}], "public_date": "2018-01-03T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2018-5703\nhttps://nvd.nist.gov/vuln/detail/CVE-2018-5703"], "statement": "This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5, 6, and 7, its real-time kernel, Red Hat Enterprise MRG 2, Red Hat Enterprise Linux 7 for ARM 64 and Red Hat Enterprise Linux 7 for Power 9 LE. The code of in-kernel TLS implementation with the flaw is not enabled and is not built in the products listed.", "threat_severity": "Moderate"}

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