Debian: DSA-4510-1: dovecot security update

    Date28 Aug 2019
    CategoryDebian
    3848
    Posted ByLinuxSecurity Advisories
    Nick Roessler and Rafi Rubin discovered that the IMAP and ManageSieve protocol parsers in the Dovecot email server do not properly validate input (both pre- and post-login). A remote attacker can take advantage of this flaw to trigger out of bounds heap memory writes, leading to
    
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    Debian Security Advisory DSA-4510-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
    https://www.debian.org/security/                     Salvatore Bonaccorso
    August 28, 2019                       https://www.debian.org/security/faq
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    Package        : dovecot
    CVE ID         : CVE-2019-11500
    
    Nick Roessler and Rafi Rubin discovered that the IMAP and ManageSieve
    protocol parsers in the Dovecot email server do not properly validate
    input (both pre- and post-login). A remote attacker can take advantage
    of this flaw to trigger out of bounds heap memory writes, leading to
    information leaks or potentially the execution of arbitrary code.
    
    For the oldstable distribution (stretch), this problem has been fixed
    in version 1:2.2.27-3+deb9u5.
    
    For the stable distribution (buster), this problem has been fixed in
    version 1:2.3.4.1-5+deb10u1.
    
    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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