Vulnerability in Frederik Vermeulen Netqmail
CVE-2011-1431
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.
Published · last modified .
CVSS v2 metric
CVSS v2 base score 6.8 (Medium). Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.046 (91.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 91.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.046 · newest: 0.046 · change: 0.000
Affected products
- Frederik Vermeulen Netqmail — versions 1.06
Public proof-of-concept exploits
References
- exchange.xforce.ibmcloud.com/vulnerabilities/65932 (vdb-entry)
- www.kb.cert.org/vuls/id/MAPG-8D9M5Q (US Government Resource)
- inoa.net/qmail-tls/vu555316.patch (Patch)
- www.postfix.org/CVE-2011-0411.html (Exploit, Vendor Advisory)
- www.vupen.com/english/advisories/2011/0612 (vdb-entry, Vendor Advisory)
- www.securityfocus.com/bid/46767 (vdb-entry)
- www.kb.cert.org/vuls/id/555316 (US Government Resource, third-party-advisory)
- www.securityfocus.com/archive/1/516901 (mailing-list, Exploit)
- securityreason.com/securityalert/8144 (third-party-advisory)
Frequently asked questions
- What is CVE-2011-1431?
- CVE-2011-1431 is a vulnerability in Frederik Vermeulen Netqmail. Published 2011-03-16.
- Is CVE-2011-1431 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.