Debian: DSA-4130-1: dovecot security update

    Date02 Mar 2018
    CategoryDebian
    5822
    Posted ByAnthony Pell
    Several vulnerabilities have been discovered in the Dovecot email server. The Common Vulnerabilities and Exposures project identifies the following issues:
    
    - -------------------------------------------------------------------------
    Debian Security Advisory DSA-4130-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
    https://www.debian.org/security/                     Salvatore Bonaccorso
    March 02, 2018                        https://www.debian.org/security/faq
    - -------------------------------------------------------------------------
    
    Package        : dovecot
    CVE ID         : CVE-2017-14461 CVE-2017-15130 CVE-2017-15132
    Debian Bug     : 888432 891819 891820
    
    Several vulnerabilities have been discovered in the Dovecot email
    server. The Common Vulnerabilities and Exposures project identifies the
    following issues:
    
    CVE-2017-14461
    
        Aleksandar Nikolic of Cisco Talos and 'flxflndy' discovered that
        Dovecot does not properly parse invalid email addresses, which may
        cause a crash or leak memory contents to an attacker.
    
    CVE-2017-15130
    
        It was discovered that TLS SNI config lookups may lead to excessive
        memory usage, causing imap-login/pop3-login VSZ limit to be reached
        and the process restarted, resulting in a denial of service. Only
        Dovecot configurations containing local_name { } or local { }
        configuration blocks are affected.
    
    CVE-2017-15132
    
        It was discovered that Dovecot contains a memory leak flaw in the
        login process on aborted SASL authentication.
    
    For the oldstable distribution (jessie), these problems have been fixed
    in version 1:2.2.13-12~deb8u4.
    
    For the stable distribution (stretch), these problems have been fixed in
    version 1:2.2.27-3+deb9u2.
    
    We recommend that you upgrade your dovecot packages.
    
    For the detailed security status of dovecot please refer to its security
    tracker page at:
    https://security-tracker.debian.org/tracker/dovecot
    
    Further information about Debian Security Advisories, how to apply
    these updates to your system and frequently asked questions can be
    found at: https://www.debian.org/security/
    
    Mailing list: This email address is being protected from spambots. You need JavaScript enabled to view it.
    
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