{"id":"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","aliases":["BIT-node-2022-3786","BIT-node-min-2022-3786","GHSA-h8jm-2x53-xhp5","RUSTSEC-2022-0065"],"modified":"2026-07-17T21:00:39.207457295Z","published":"2022-11-01T00:00:00Z","related":["ALSA-2022:7288","SUSE-SU-2022:3843-1","SUSE-SU-2022:4586-1","openSUSE-SU-2024:12469-1","openSUSE-SU-2024:12475-1","openSUSE-SU-2024:12479-1","openSUSE-SU-2024:12480-1","openSUSE-SU-2025:14739-1","openSUSE-SU-2025:14740-1"],"database_specific":{"unresolved_ranges":[{"extracted_events":[{"introduced":"3.0.0"},{"fixed":"3.0.7"}],"source":"AFFECTED_FIELD"}],"cna_assigner":"openssl","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/3xxx/CVE-2022-3786.json"},"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/openssl/openssl","events":[{"introduced":"89cd17a031e022211684eb7eb41190cf1910f9fa"},{"fixed":"19cc035b6c6f2283573d29c7ea7f7d675cf750ce"}],"database_specific":{"source":"CPE_RANGE","cpe":"cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"3.0.0"},{"fixed":"3.0.7"}]}}],"versions":["openssl-3.0.6","openssl-3.0.5","openssl-3.0.4","openssl-3.0.3","openssl-3.0.2","openssl-3.0.1","openssl-3.0.0"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-3786.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}