{"id":"UBUNTU-CVE-2015-7687","details":"Use-after-free vulnerability in OpenSMTPD before 5.7.2 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via vectors involving req_ca_vrfy_smtp and req_ca_vrfy_mta.","modified":"2025-09-08T16:43:28Z","published":"2017-10-16T18:29:00Z","upstream":["CVE-2015-7687"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2015-7687"},{"type":"REPORT","url":"http://www.openwall.com/lists/oss-security/2015/10/02/8"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2015-7687"}],"affected":[{"package":{"name":"opensmtpd","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/opensmtpd@5.4.1p1-1ubuntu0.1~esm1?arch=source&distro=esm-infra-legacy/trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.3.3p1-4","5.4.1p1-1","5.4.1p1-1ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"opensmtpd","binary_version":"5.4.1p1-1ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2015/UBUNTU-CVE-2015-7687.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}