ASA-201803-7 log generated external raw

Arch Linux Security Advisory ASA-201803-7 ========================================= Severity: High Date : 2018-03-06 CVE-ID : CVE-2017-14461 CVE-2017-15130 CVE-2017-15132 Package : dovecot Type : multiple issues Remote : Yes Link : https://security.archlinux.org/AVG-645 Summary ======= The package dovecot before version 2.3.0.1-1 is vulnerable to multiple issues including information disclosure and denial of service. Resolution ========== Upgrade to 2.3.0.1-1. # pacman -Syu "dovecot>=2.3.0.1-1" The problems have been fixed upstream in version 2.3.0.1. Workaround ========== None. Description =========== - CVE-2017-14461 (information disclosure) A specially crafted email delivered over SMTP and passed on to Dovecot by MTA can trigger an out of bounds read resulting in potential sensitive information disclosure of an email from another user or may cause an application crash. In order to trigger this vulnerability, an imap-authenticated attacker needs to send a specially crafted email message to the server. - CVE-2017-15130 (denial of service) A denial of service flaw was found in dovecot before 2.2.34 and 2.3.0.1. An attacker able to generate random SNI server names could exploit TLS SNI configuration lookups, leading to excessive memory usage, causing imap-login/pop3-login VSZ limit to be reached and the process restarted. This happens only if Dovecot config has local_name { } or local { } configuration blocks and attacker uses randomly generated SNI servernames. - CVE-2017-15132 (denial of service) A flaw was found in dovecot before 2.2.34 and 2.3.0.1. An abort of SASL authentication results in a memory leak in dovecot's auth client used by login processes. The leak has impact in high performance configuration where same login processes are reused and can cause the process to crash due to memory exhaustion. Impact ====== A remote attacker is able to crash the application or disclose information by sending a specially crafted email. References ========== https://www.dovecot.org/list/dovecot-news/2018-February/000371.html https://talosintelligence.com/vulnerability_reports/TALOS-2017-0510 https://github.com/dovecot/core/commit/30dc856f7b97b75b0e0d69f5003d5d99a13249b4 https://github.com/dovecot/core/commit/8d65e2345e1dbedb00b662ee0abd05be2e7e6b7e https://github.com/dovecot/core/commit/b72d864b8c34cb21076214c0b28101baec530141 https://github.com/dovecot/core/commit/e9b86842441a668b30796bff7d60828614570a1b https://github.com/dovecot/core/commit/f5cd17a27f0b666567747f8c921ebe1026970f11 https://github.com/dovecot/core/commit/18a7a161c8dae6f630770a3cbab7374a0c3dd732 https://github.com/dovecot/core/commit/0ed696987e5e5d44e971da2a10f6275b276ece34 https://www.dovecot.org/list/dovecot-news/2018-February/000370.html https://github.com/dovecot/core/commit/1a29ed2f96da1be22fa5a4d96c7583aa81b8b060 https://security.archlinux.org/CVE-2017-14461 https://security.archlinux.org/CVE-2017-15130 https://security.archlinux.org/CVE-2017-15132