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    CVE-2011-1926

    The STARTTLS implementation in Cyrus IMAP Server before 2.4.7 does not properly restrict I/O buffering, which allows man-in-the-middle attackers to insert commands into encrypted sessions by sending a cleartext command that is processed after TLS is in place, related to a "plaintext command injection" attack, a similar issue to CVE-2011-0411.

    Published:Mar 25, 2011
    Last Modified:Apr 11, 2025
    EPS:May 23, 2011
    EPSS Score:0.04867
    CVSS Score:5.1

    Affected Products

    Vendor
    Cmu
    Product
    Cyrus Imap Server
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    References

    http://bugzilla.cyrusimap.org/show_bug.cgi?id=3423
    http://bugzilla.cyrusimap.org/show_bug.cgi?id=3424
    http://git.cyrusimap.org/cyrus-imapd/patch/?id=523a91a5e86c8b9a27a138f04a3e3f2d8786f162
    http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061374.html
    http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061415.html
    http://openwall.com/lists/oss-security/2011/05/17/15
    http://openwall.com/lists/oss-security/2011/05/17/2
    http://secunia.com/advisories/44670
    http://secunia.com/advisories/44876
    http://secunia.com/advisories/44913
    http://secunia.com/advisories/44928
    http://www.cyrusimap.org/docs/cyrus-imapd/2.4.7/changes.php
    http://www.debian.org/security/2011/dsa-2242
    http://www.debian.org/security/2011/dsa-2258
    http://www.kb.cert.org/vuls/id/555316
    http://www.mandriva.com/security/advisories?name=MDVSA-2011:100
    http://www.redhat.com/support/errata/RHSA-2011-0859.html
    http://www.securitytracker.com/id?1025625
    https://bugzilla.redhat.com/show_bug.cgi?id=705288
    https://exchange.xforce.ibmcloud.com/vulnerabilities/67867
    http://bugzilla.cyrusimap.org/show_bug.cgi?id=3423
    http://bugzilla.cyrusimap.org/show_bug.cgi?id=3424
    http://git.cyrusimap.org/cyrus-imapd/patch/?id=523a91a5e86c8b9a27a138f04a3e3f2d8786f162
    http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061374.html
    http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061415.html
    http://openwall.com/lists/oss-security/2011/05/17/15
    http://openwall.com/lists/oss-security/2011/05/17/2
    http://secunia.com/advisories/44670
    http://secunia.com/advisories/44876
    http://secunia.com/advisories/44913
    http://secunia.com/advisories/44928
    http://www.cyrusimap.org/docs/cyrus-imapd/2.4.7/changes.php
    http://www.debian.org/security/2011/dsa-2242
    http://www.debian.org/security/2011/dsa-2258
    http://www.kb.cert.org/vuls/id/555316
    http://www.mandriva.com/security/advisories?name=MDVSA-2011:100
    http://www.redhat.com/support/errata/RHSA-2011-0859.html
    http://www.securitytracker.com/id?1025625
    https://bugzilla.redhat.com/show_bug.cgi?id=705288
    https://exchange.xforce.ibmcloud.com/vulnerabilities/67867

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High