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Debian Security Advisory 2258-1

Debian Security Advisory 2258-1
Posted Jun 13, 2011
Authored by Debian | Site debian.org

Debian Linux Security Advisory 2258-1 - 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. Please note that the advisory number listed in this advisory incorrectly calls it 2257-1, but it is 2258-1.

tags | advisory, imap
systems | linux, debian
advisories | CVE-2011-1926
SHA-256 | 60c5310993e97c19c5cdcdcf134c44109b643441cbeea79d62de1831cea396a1

Debian Security Advisory 2258-1

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- -------------------------------------------------------------------------
Debian Security Advisory DSA-2257-1 security@debian.org
http://www.debian.org/security/ Nico Golde
June 11, 2011 http://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package : kolab-cyrus-imapd
Vulnerability : implementation error
Problem type : remote
Debian-specific: no
CVE ID : CVE-2011-1926
Debian Bug : 629350

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.

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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