Security Information / 2011 / Security Information -- DSA-2258-1 kolab-cyrus-imapd

Debian Security Advisory

DSA-2258-1 kolab-cyrus-imapd -- implementation error

Date Reported:

11 Jun 2011

Affected Packages:

kolab-cyrus-imapd

Vulnerable:

Yes

Security database references:

In the Debian bugtracking system: Bug 629350.
In Mitre's CVE dictionary: CVE-2011-1926.

More information:

It was discovered that the STARTTLS implementation of the Kolab Cyrus IMAP server does not properly restrict I/O buffering, which allows man-in-the-middle attackers to insert commands into encrypted IMAP, LMTP, NNTP and POP3 sessions by sending a cleartext command that is processed after TLS is in place.

For the oldstable distribution (lenny), this problem has been fixed in version 2.2.13-5+lenny3.

For the stable distribution (squeeze), this problem has been fixed in version 2.2.13-9.1.

For the testing distribution (wheezy), this problem has been fixed in version 2.2.13p1-0.1.

For the unstable distribution (sid), this problem has been fixed in version 2.2.13p1-0.1.

We recommend that you upgrade your kolab-cyrus-imapd packages.