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Debian Security Advisory 2233-1

Debian Security Advisory 2233-1
Posted May 10, 2011
Authored by Debian | Site debian.org

Debian Linux Security Advisory 2233-1 - Several vulnerabilities were discovered in Postfix, a mail transfer agent.

tags | advisory, vulnerability
systems | linux, debian
advisories | CVE-2009-2939, CVE-2011-0411, CVE-2011-1720
MD5 | 777ed4cbea09e007860b29ecab6dfc81

Debian Security Advisory 2233-1

Change Mirror Download
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- -------------------------------------------------------------------------
Debian Security Advisory DSA-2233-1 security@debian.org
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@lists.debian.org
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