• [SECURITY] [DSA 2233-1] postfix security update

    From Florian Weimer@1:229/2 to All on Tue May 10 20:00:01 2011
    From: [email protected]

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    - ------------------------------------------------------------------------- Debian Security Advisory DSA-2233-1 [email protected] http://www.debian.org/security/ Florian Weimer
    May 10, 2011 http://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package : postfix
    Vulnerability : several
    Problem type : remote
    Debian-specific: no
    CVE ID : CVE-2009-2939 CVE-2011-0411 CVE-2011-1720

    Several vulnerabilities were discovered in Postfix, a mail transfer
    agent. The Common Vulnerabilities and Exposures project identifies
    the following problems:

    CVE-2009-2939
    The postinst script grants the postfix user write access to
    /var/spool/postfix/pid, which might allow local users to
    conduct symlink attacks that overwrite arbitrary files.

    CVE-2011-0411
    The STARTTLS implementation does not properly restrict I/O
    buffering, which allows man-in-the-middle attackers to insert
    commands into encrypted SMTP sessions by sending a cleartext
    command that is processed after TLS is in place.

    CVE-2011-1720
    A heap-based read-only buffer overflow allows malicious
    clients to crash the smtpd server process using a crafted SASL
    authentication request.

    For the oldstable distribution (lenny), this problem has been fixed in
    version 2.5.5-1.1+lenny1.

    For the stable distribution (squeeze), this problem has been fixed in
    version 2.7.1-1+squeeze1.

    For the unstable distribution (sid), this problem has been fixed in
    version 2.8.0-1.

    We recommend that you upgrade your postfix packages.

    Further information about Debian Security Advisories, how to apply
    these updates to your system and frequently asked questions can be
    found at: http://www.debian.org/security/

    Mailing list: [email protected]
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