Description: | Summary: The remote host is missing an update for the Debian 'postfix' package(s) announced via the DSA-2233-1 advisory.
Vulnerability Insight: 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.
Affected Software/OS: 'postfix' package(s) on Debian 5, Debian 6.
Solution: Please install the updated package(s).
CVSS Score: 6.8
CVSS Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P
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