CVE-2017-18594

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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:nmap:nmap:7.70:*:*:*:*:*:*:*", "matchCriteriaId": "3F2B2815-27CD-4A22-9394-332073CF9970", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "nse_libssh2.cc in Nmap 7.70 is subject to a denial of service condition due to a double free when an SSH connection fails, as demonstrated by a leading \\n character to ssh-brute.nse or ssh-auth-methods.nse."}, {"lang": "es", "value": "nse_libssh2.cc en Nmap 7.70 est\u00e1 sujeto a una condici\u00f3n de denegaci\u00f3n de servicio debido a una doble liberaci\u00f3n cuando se produce un error en una conexi\u00f3n SSH, como lo demuestra un car\u00e1cter principal de .n a ssh-brute.nse o ssh-auth-methods.nse."}], "id": "CVE-2017-18594", "lastModified": "2026-06-17T01:13:09.730", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.0"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2019-08-29T00:15:10.467", "references": [{"source": "cve@mitre.org", "url": "http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00073.html"}, {"source": "cve@mitre.org", "url": "http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00075.html"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://github.com/AMatchandaHaystack/Research/blob/master/Nmap%26libsshDF"}, {"source": "cve@mitre.org", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/nmap/nmap/commit/350bbe0597d37ad67abe5fef8fba984707b4e9ad"}, {"source": "cve@mitre.org", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/nmap/nmap/issues/1077"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/nmap/nmap/issues/1227"}, {"source": "cve@mitre.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://seclists.org/nmap-announce/2019/0"}, {"source": "cve@mitre.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://seclists.org/nmap-dev/2018/q2/45"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00073.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00075.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://github.com/AMatchandaHaystack/Research/blob/master/Nmap%26libsshDF"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/nmap/nmap/commit/350bbe0597d37ad67abe5fef8fba984707b4e9ad"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/nmap/nmap/issues/1077"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://github.com/nmap/nmap/issues/1227"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://seclists.org/nmap-announce/2019/0"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://seclists.org/nmap-dev/2018/q2/45"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-415"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "nmap: denial of service condition due to a double free when SSH connection fails", "id": "1749181", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1749181"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.3", "cvss3_scoring_vector": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L", "status": "draft"}, "cwe": "CWE-400", "details": ["nse_libssh2.cc in Nmap 7.70 is subject to a denial of service condition due to a double free when an SSH connection fails, as demonstrated by a leading \\n character to ssh-brute.nse or ssh-auth-methods.nse."], "name": "CVE-2017-18594", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "nmap", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "nmap", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "nmap", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "nmap", "product_name": "Red Hat Enterprise Linux 8"}], "public_date": "2019-08-10T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2017-18594\nhttps://nvd.nist.gov/vuln/detail/CVE-2017-18594"], "statement": "Red Hat Enterprise Linux 8 is shipped with a vulnerable version of nmap sources, however, the libssh2 module is explicitly excluded from compilation, and is thus not affected. A future update may fix the source.\nRed Hat Enterprise Linux 7 and older are shipped with nmap-6.40 and older, which do not contain the libssh2 module.", "threat_severity": "Low"}

{}