CVE-2017-7805

{"id": "CVE-2017-7805", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 5.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV30": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.0", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "published": "2018-06-11T21:29:10.047", "references": [{"url": "http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html", "source": "security@mozilla.org"}, {"url": "http://www.securityfocus.com/bid/101059", "tags": ["Third Party Advisory", "VDB Entry"], "source": "security@mozilla.org"}, {"url": "http://www.securitytracker.com/id/1039465", "tags": ["Third Party Advisory", "VDB Entry"], "source": "security@mozilla.org"}, {"url": "https://access.redhat.com/errata/RHSA-2017:2832", "tags": ["Third Party Advisory"], "source": "security@mozilla.org"}, {"url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1377618", "tags": ["Issue Tracking", "Vendor Advisory"], "source": "security@mozilla.org"}, {"url": "https://lists.debian.org/debian-lts-announce/2017/11/msg00000.html", "tags": ["Third Party Advisory"], "source": "security@mozilla.org"}, {"url": "https://security.gentoo.org/glsa/201803-14", "tags": ["Third Party Advisory"], "source": "security@mozilla.org"}, {"url": "https://www.debian.org/security/2017/dsa-3987", "tags": ["Third Party Advisory"], "source": "security@mozilla.org"}, {"url": "https://www.debian.org/security/2017/dsa-3998", "tags": ["Third Party Advisory"], "source": "security@mozilla.org"}, {"url": "https://www.debian.org/security/2017/dsa-4014", "tags": ["Third Party Advisory"], "source": "security@mozilla.org"}, {"url": "https://www.mozilla.org/security/advisories/mfsa2017-21/", "tags": ["Vendor Advisory"], "source": "security@mozilla.org"}, {"url": "https://www.mozilla.org/security/advisories/mfsa2017-22/", "tags": ["Vendor Advisory"], "source": "security@mozilla.org"}, {"url": "https://www.mozilla.org/security/advisories/mfsa2017-23/", "tags": ["Vendor Advisory"], "source": "security@mozilla.org"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-416"}]}], "descriptions": [{"lang": "en", "value": "During TLS 1.2 exchanges, handshake hashes are generated which point to a message buffer. This saved data is used for later messages but in some cases, the handshake transcript can exceed the space available in the current buffer, causing the allocation of a new buffer. This leaves a pointer pointing to the old, freed buffer, resulting in a use-after-free when handshake hashes are then calculated afterwards. This can result in a potentially exploitable crash. This vulnerability affects Firefox < 56, Firefox ESR < 52.4, and Thunderbird < 52.4."}, {"lang": "es", "value": "Durante los intercambios TLS 1.2, los hashes de los handshakes se generan apuntando a un b\u00fafer de mensaje. Estos datos guardados se utilizan para futuros mensajes pero, en determinados casos, la transcripci\u00f3n del handshake puede exceder el espacio disponible en el b\u00fafer actual, provocando la asignaci\u00f3n de un nuevo b\u00fafer. Esto deja al puntero apuntando al b\u00fafer antiguo liberado, resultando en una condici\u00f3n de uso de memoria previamente liberada cuando los hashes del handshake se calculan posteriormente. Esto puede resultar en un cierre inesperado explotable. Esta vulnerabilidad afecta a las versiones anteriores a la 56 de Firefox, las versiones anteriores a la 52.4 de Firefox ESR y las versiones anteriores a la 52.4 de Thunderbird."}], "lastModified": "2018-10-17T01:30:58.527", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:mozilla:firefox:56.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4EE4FDF7-3856-4D26-A4F3-DDD5D18DE940"}, {"criteria": "cpe:2.3:a:mozilla:firefox_esr:52.4.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8EC4764D-4FC5-4A77-8CEC-384DEE7A0F48"}, {"criteria": "cpe:2.3:a:mozilla:thunderbird:52.4.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B65D17DC-9741-4A1C-A059-FF59F4429BA6"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "16F59A04-14CF-49E2-9973-645477EA09DA"}, {"criteria": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43"}, {"criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252"}], "operator": "OR"}]}], "sourceIdentifier": "security@mozilla.org"}