BugTraq
[SECURITY] [DSA 2242-1] cyrus-imapd-2.2 security update May 25 2011 07:56PM
Moritz Muehlenhoff (jmm debian org)
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Debian Security Advisory DSA-2242-1 security (at) debian (dot) org [email concealed]
http://www.debian.org/security/ Moritz Muehlenhoff
May 25, 2011 http://www.debian.org/security/faq
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Package : cyrus-imapd-2.2
Vulnerability : implementation error
Problem type : remote
Debian-specific: no
CVE ID : CVE-2011-1926
Debian Bug : 627081

It was discovered that the STARTTLS implementation of the 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 2.2.13-14+lenny4.

For the stable distribution (squeeze), this problem has been fixed in
version 2.2.13-19+squeeze1.

For the unstable distribution (sid), this problem has been fixed in
version 2.2.13p1-11 for cyrus-imapd-2.2 and in version 2.4.7-1
for cyrus-imapd-2.4.

We recommend that you upgrade your cyrus-imapd-2.2 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 (at) lists.debian (dot) org [email concealed]
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