Vulnerability Description
The STARTTLS implementation in qmail-smtpd.c in qmail-smtpd in the netqmail-1.06-tls patch for netqmail 1.06 does not properly restrict I/O buffering, which allows man-in-the-middle attackers to insert commands into encrypted SMTP 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 |
|---|---|---|
| Frederik Vermeulen | Netqmail | 1.06 |
References
- http://inoa.net/qmail-tls/vu555316.patchPatch
- http://securityreason.com/securityalert/8144
- http://www.kb.cert.org/vuls/id/555316US Government Resource
- http://www.kb.cert.org/vuls/id/MAPG-8D9M5QUS Government Resource
- http://www.postfix.org/CVE-2011-0411.htmlExploitVendor Advisory
- http://www.securityfocus.com/archive/1/516901Exploit
- http://www.securityfocus.com/bid/46767
- http://www.vupen.com/english/advisories/2011/0612Vendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/65932
- http://inoa.net/qmail-tls/vu555316.patchPatch
- http://securityreason.com/securityalert/8144
- http://www.kb.cert.org/vuls/id/555316US Government Resource
- http://www.kb.cert.org/vuls/id/MAPG-8D9M5QUS Government Resource
- http://www.postfix.org/CVE-2011-0411.htmlExploitVendor Advisory
- http://www.securityfocus.com/archive/1/516901Exploit
FAQ
What is CVE-2011-1431?
CVE-2011-1431 is a vulnerability with a CVSS score of 6.8 (MEDIUM). The STARTTLS implementation in qmail-smtpd.c in qmail-smtpd in the netqmail-1.06-tls patch for netqmail 1.06 does not properly restrict I/O buffering, which allows man-in-the-middle attackers to inser...
How severe is CVE-2011-1431?
CVE-2011-1431 has been rated MEDIUM with a CVSS base score of 6.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2011-1431?
Check the references section above for vendor advisories and patch information. Affected products include: Frederik Vermeulen Netqmail.