Debian: DSA-2242-1: cyrus-imapd-2.2 security update

    Date25 May 2011
    CategoryDebian
    70
    Posted ByLinuxSecurity Advisories
    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
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    Debian Security Advisory DSA-2242-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
    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: This email address is being protected from spambots. You need JavaScript enabled to view it.
    
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