• [SECURITY] [DSA 4745-1] dovecot security update

    From Salvatore Bonaccorso@21:1/5 to All on Wed Aug 12 18:00:01 2020
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    - ------------------------------------------------------------------------- Debian Security Advisory DSA-4745-1 security@debian.org https://www.debian.org/security/ Salvatore Bonaccorso August 12, 2020 https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package : dovecot
    CVE ID : CVE-2020-12100 CVE-2020-12673 CVE-2020-12674

    Several vulnerabilities have been discovered in the Dovecot email
    server.

    CVE-2020-12100

    Receiving mail with deeply nested MIME parts leads to resource
    exhaustion as Dovecot attempts to parse it.

    CVE-2020-12673

    Dovecot's NTLM implementation does not correctly check message
    buffer size, which leads to a crash when reading past allocation.

    CVE-2020-12674

    Dovecot's RPA mechanism implementation accepts zero-length message,
    which leads to assert-crash later on.

    For the stable distribution (buster), these problems have been fixed in
    version 1:2.3.4.1-5+deb10u3.

    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: debian-security-announce@lists.debian.org
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