{ "containers": { "cna": { "affected": [ { "product": "Firefox", "vendor": "Mozilla", "versions": [ { "lessThan": "56", "status": "affected", "version": "unspecified", "versionType": "custom" } ] }, { "product": "Firefox ESR", "vendor": "Mozilla", "versions": [ { "lessThan": "52.4", "status": "affected", "version": "unspecified", "versionType": "custom" } ] }, { "product": "Thunderbird", "vendor": "Mozilla", "versions": [ { "lessThan": "52.4", "status": "affected", "version": "unspecified", "versionType": "custom" } ] } ], "datePublic": "2017-09-28T00:00:00.000Z", "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." } ], "problemTypes": [ { "descriptions": [ { "description": "Use-after-free in TLS 1.2 generating handshake hashes", "lang": "en", "type": "text" } ] } ], "providerMetadata": { "dateUpdated": "2018-10-17T00:57:01.000Z", "orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe", "shortName": "mozilla" }, "references": [ { "name": "RHSA-2017:2832", "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2017:2832" }, { "name": "101059", "tags": [ "vdb-entry", "x_refsource_BID" ], "url": "http://www.securityfocus.com/bid/101059" }, { "name": "[debian-lts-announce] 20171101 [SECURITY] [DLA 1153-1] icedove/thunderbird security update", "tags": [ "mailing-list", "x_refsource_MLIST" ], "url": "https://lists.debian.org/debian-lts-announce/2017/11/msg00000.html" }, { "tags": [ "x_refsource_CONFIRM" ], "url": "https://www.mozilla.org/security/advisories/mfsa2017-22/" }, { "tags": [ "x_refsource_CONFIRM" ], "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=1377618" }, { "name": "1039465", "tags": [ "vdb-entry", "x_refsource_SECTRACK" ], "url": "http://www.securitytracker.com/id/1039465" }, { "tags": [ "x_refsource_CONFIRM" ], "url": "https://www.mozilla.org/security/advisories/mfsa2017-21/" }, { "name": "DSA-4014", "tags": [ "vendor-advisory", "x_refsource_DEBIAN" ], "url": "https://www.debian.org/security/2017/dsa-4014" }, { "tags": [ "x_refsource_CONFIRM" ], "url": "http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html" }, { "tags": [ "x_refsource_CONFIRM" ], "url": "https://www.mozilla.org/security/advisories/mfsa2017-23/" }, { "name": "DSA-3998", "tags": [ "vendor-advisory", "x_refsource_DEBIAN" ], "url": "https://www.debian.org/security/2017/dsa-3998" }, { "name": "DSA-3987", "tags": [ "vendor-advisory", "x_refsource_DEBIAN" ], "url": "https://www.debian.org/security/2017/dsa-3987" }, { "name": "GLSA-201803-14", "tags": [ "vendor-advisory", "x_refsource_GENTOO" ], "url": "https://security.gentoo.org/glsa/201803-14" } ], "x_legacyV4Record": { "CVE_data_meta": { "ASSIGNER": "security@mozilla.org", "ID": "CVE-2017-7805", "STATE": "PUBLIC" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "Firefox", "version": { "version_data": [ { "version_affected": "<", "version_value": "56" } ] } }, { "product_name": "Firefox ESR", "version": { "version_data": [ { "version_affected": "<", "version_value": "52.4" } ] } }, { "product_name": "Thunderbird", "version": { "version_data": [ { "version_affected": "<", "version_value": "52.4" } ] } } ] }, "vendor_name": "Mozilla" } ] } }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "During TLS 1.2 exchanges, handshake hashes are generated which point to a message buffer. 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