{"id":"CVE-2022-3786","aliases":["BIT-node-2022-3786","BIT-node-min-2022-3786","GHSA-h8jm-2x53-xhp5","RUSTSEC-2022-0065"],"url":"https://o3.security/vulnerability/CVE-2022-3786","summary":"X.509 Email Address Variable Length Buffer Overflow","details":"A buffer overrun can be triggered in X.509 certificate verification, specifically in name constraint checking. Note that this occurs after certificate chain signature verification and requires either a CA to have signed a malicious certificate or for an application to continue certificate verification despite failure to construct a path to a trusted issuer. An attacker can craft a malicious email address in a certificate to overflow an arbitrary number of bytes containing the `.' character (decimal 46) on the stack. This buffer overflow could result in a crash (causing a denial of service). In a TLS client, this can be triggered by connecting to a malicious server. In a TLS server, this can be triggered if the server requests client authentication and a malicious client connects.\n\n","published":"2022-11-01T00:00:00Z","modified":"2026-10-28T02:31:06.592966110Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":{"score":0.92488,"percentile":0.9982,"asOf":"2026-09-15"},"cisaKev":null,"exploitsKnown":2,"affectedPackages":[{"ecosystem":"crates.io","name":"openssl-src","fixedVersion":"300.0.11"}],"fix":{"url":"https://github.com/rustsec/advisory-db/pull/1452","label":"rustsec/advisory-db#1452"},"references":[{"type":"WEB","url":"https://cert-portal.siemens.com/productcert/html/ssa-408105.html"},{"type":"WEB","url":"https://www.kb.cert.org/vuls/id/794340"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/3xxx/CVE-2022-3786.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-3786"},{"type":"ADVISORY","url":"https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00789.html"},{"type":"ADVISORY","url":"https://www.openssl.org/news/secadv/20221101.txt"},{"type":"FIX","url":"https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=c42165b5706e42f67ef8ef4c351a9a4c5d21639a"},{"type":"WEB","url":"https://github.com/rustsec/advisory-db/pull/1452"},{"type":"WEB","url":"https://github.com/alexcrichton/openssl-src-rs/commit/4a31c14f31e1a08c18893a37e304dd1dd4b7daa3"},{"type":"WEB","url":"https://github.com/openssl/openssl/commit/fe3b639dc19b325846f4f6801f2f4604f56e3de3"},{"type":"WEB","url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-openssl-W9sdCc2a"},{"type":"WEB","url":"https://security.netapp.com/advisory/ntap-20221102-0001"},{"type":"WEB","url":"https://security.gentoo.org/glsa/202211-01"},{"type":"WEB","url":"https://rustsec.org/advisories/RUSTSEC-2022-0065.html"},{"type":"WEB","url":"https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2022-0023"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/DWP23EZYOBDJQP7HP4YU7W2ABU2YDITS"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/63YRPWPUSX3MBHNPIEJZDKQT6YA7UF6S"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DWP23EZYOBDJQP7HP4YU7W2ABU2YDITS"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/63YRPWPUSX3MBHNPIEJZDKQT6YA7UF6S"},{"type":"PACKAGE","url":"https://github.com/alexcrichton/openssl-src-rs"},{"type":"WEB","url":"https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=c42165b5706e42f67ef8ef4c351a9a4c5d21639a"},{"type":"WEB","url":"http://packetstormsecurity.com/files/169687/OpenSSL-Security-Advisory-20221101.html"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2022/11/01/15"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2022/11/01/16"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2022/11/01/17"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2022/11/01/18"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2022/11/01/19"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2022/11/01/20"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2022/11/01/21"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2022/11/01/24"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2022/11/02/1"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2022/11/02/10"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2022/11/02/11"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2022/11/02/12"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2022/11/02/13"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2022/11/02/14"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2022/11/02/15"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2022/11/02/2"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2022/11/02/3"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2022/11/02/5"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2022/11/02/6"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2022/11/02/7"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2022/11/02/9"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2022/11/03/1"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2022/11/03/10"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2022/11/03/11"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2022/11/03/2"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2022/11/03/3"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2022/11/03/5"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-securit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(EPSS)"],"lastVerified":"2026-10-28T02:31:06.592966110Z"}}