{"action":"Upgrade dovecot to 1:2.2.13-12 or later.","affected":[{"fixed":"1:2.2.13-12","introduced":"0"}],"component":"dovecot","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["1:2.2.13-12"],"id":"tcs_01M5NB70PAQW7WFSX4CDJPVH1M","modified_at":"2026-09-09T07:00:52.875605363Z","published_at":"2017-09-19T15:29:00.740Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2015-3420","https://security-tracker.debian.org/tracker/CVE-2015-3420"],"severity":{"label":"medium","score":5.9},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2015-3420#Debian:13/dovecot","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2015-3420"}],"summary":"The ssl-proxy-openssl.c function in Dovecot before 2.2.17, when SSLv3 is disabled, allow remote attackers to cause a denial of service (login process crash) via vectors related to handshake failures."}