Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cmu | Cyrus Imap Server | <= 2.4.6 |
Related Weaknesses (CWE)
References
- http://bugzilla.cyrusimap.org/show_bug.cgi?id=3423Patch
- http://bugzilla.cyrusimap.org/show_bug.cgi?id=3424Patch
- http://git.cyrusimap.org/cyrus-imapd/patch/?id=523a91a5e86c8b9a27a138f04a3e3f2d8Patch
- 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/2011/05/17/15Patch
- http://openwall.com/lists/oss-security/2011/05/17/2Patch
- 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/555316US Government Resource
FAQ
What is CVE-2011-1926?
CVE-2011-1926 is a vulnerability with a CVSS score of 5.1 (MEDIUM). 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...
How severe is CVE-2011-1926?
CVE-2011-1926 has been rated MEDIUM with a CVSS base score of 5.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2011-1926?
Check the references section above for vendor advisories and patch information. Affected products include: Cmu Cyrus Imap Server.