Explain 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.
Affected Products: n/a
References: [{'name': 'RHSA-2011:0859', 'tags': ['vendor-advisory', 'x_refsource_REDHAT'], 'url': 'http://www.redhat.com/support/errata/RHSA-2011-0859.html'}, {'name': 'FEDORA-2011-7217', 'tags': ['vendor-advisory', 'x_refsource_FEDORA'], 'url': 'http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061374.html'}, {'name': 'DSA-2258', 'tags': ['vendor-advisory', 'x_refsource_DEBIAN'], 'url': 'http://www.debian.org/security/2011/dsa-2258'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'http://www.cyrusimap.org/docs/cyrus-imapd/2.4.7/changes.php'}, {'name': 'MDVSA-2011:100', 'tags': ['vendor-advisory', 'x_refsource_MANDRIVA'], 'url': 'http://www.mandriva.com/security/advisories?name=MDVSA-2011:100'}, {'name': 'FEDORA-2011-7193', 'tags': ['vendor-advisory', 'x_refsource_FEDORA'], 'url': 'http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061415.html'}, {'name': '1025625', 'tags': ['vdb-entry', 'x_refsource_SECTRACK'], 'url': 'http://www.securitytracker.com/id?1025625'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'http://bugzilla.cyrusimap.org/show_bug.cgi?id=3423'}, {'name': 'DSA-2242', 'tags': ['vendor-advisory', 'x_refsource_DEBIAN'], 'url': 'http://www.debian.org/security/2011/dsa-2242'}, {'name': '44876', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/44876'}, {'name': '[oss-security] 20110517 CVE Request -- Cyrus-IMAP STARTTLS issue -- [was: Re: pure-ftpd STARTTLS command injection / new CVE?]', 'tags': ['mailing-list', 'x_refsource_MLIST'], 'url': 'http://openwall.com/lists/oss-security/2011/05/17/2'}, {'name': 'VU#555316', 'tags': ['third-party-advisory', 'x_refsource_CERT-VN'], 'url': 'http://www.kb.cert.org/vuls/id/555316'}, {'name': '44928', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/44928'}, {'name': '44913', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/44913'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'http://bugzilla.cyrusimap.org/show_bug.cgi?id=3424'}, {'name': '44670', 'tags': ['third-party-advisory', 'x_refsource_SECUNIA'], 'url': 'http://secunia.com/advisories/44670'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=705288'}, {'name': 'cyrus-starttls-command-exec(67867)', 'tags': ['vdb-entry', 'x_refsource_XF'], 'url': 'https://exchange.xforce.ibmcloud.com/vulnerabilities/67867'}, {'tags': ['x_refsource_CONFIRM'], 'url': 'http://git.cyrusimap.org/cyrus-imapd/patch/?id=523a91a5e86c8b9a27a138f04a3e3f2d8786f162'}, {'name': '[oss-security] 20110517 Re: CVE Request -- Cyrus-IMAP STARTTLS issue -- [was: Re: pure-ftpd STARTTLS command injection / new CVE?]', 'tags': ['mailing-list', 'x_refsource_MLIST'], 'url': 'http://openwall.com/lists/oss-security/2011/05/17/15'}]
CVE State: PUBLISHED