In Dovecot before 2.2.36.3 and 2.3.x before 2.3.5.1, a local attacker can cause a buffer overflow in the indexer-worker process, which can be used to elevate to root. This occurs because of missing checks in the fts and pop3-uidl components.Referenceshttps://dovecot.org/security.htmlhttps://dovecot.org/list/dovecot-news/2019-March/000403.htmlhttp://www.openwall.com/lists/oss-security/2019/03/28/1https://seclists.org/bugtraq/2019/Mar/59https://www.debian.org/security/2019/dsa-4418https://lists.debian.org/debian-lts-announce/2019/03/msg00038.htmlhttps://usn.ubuntu.com/3928-1/http://www.securityfocus.com/bid/107672http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00060.htmlhttp://lists.opensuse.org/opensuse-security-announce/2019-04/msg00067.htmlhttps://security.gentoo.org/glsa/201904-19https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4XLI55NGRDTGMVOPYFCPPFNPA5VKYSSY/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QHFZ5OWRIZGIWZJ5PTNVWWZNLLNH4XYS/