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

[Florian Weimer <fw@xxxxxxxxxxxxx>]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

- -------------------------------------------------------------------------
Debian Security Advisory DSA-2233-1                   security@xxxxxxxxxx
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: debian-security-announce@xxxxxxxxxxxxxxxx
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.9 (GNU/Linux)

iQEcBAEBAgAGBQJNyXybAAoJEL97/wQC1SS+xb0H/igqYhOTtvO91deptOPyednw
5sBQPXGoo+RXeomLsJk8P6ezm7fEGTSl7GUEpNwS1qsqAPVnl9XAK6dOGFae1PbG
2L93eR6AKgKo60tp2On1Tf1c0HcD6yKiZ6J7C7nZ3E8+yZwSd1k6826ZUQ3gzKKW
DTIu6w2CzzleK/bppWfhAvwvobHD6X1B16qklZfqw6H0C/QfMjM8ZXLCRv9Tq1TN
jX1W4qeed7pr8r3pTJ9npzae7drqFLoVDi0tpGKi0UHEwgRma1AbDaI2BVmeblue
YNRHg7H+TqfrUwN8iB64WrYvqnHCQfvViL8f0ML2uJXJf/lHby+vxPl6EGxAIoY=
=yCCp
-----END PGP SIGNATURE-----