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 Mar 16, 2011
6.8
MEDIUMCVSS 2.0
EPSS 4.59%
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.
Affected products
No data.
- 1.06
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 4.59% (0.04593) | 91.37th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.59% (0.04593) | 90.41th | v5 (v2026.06.15) |
| Mar 30, 2025 | 6.12% (0.06115) | 89.84th | v4 (v2025.03.14) |
| Mar 29, 2025 | 7.88% (0.07877) | 86.42th | v4 (v2025.03.14) |
| Mar 17, 2025 | 6.12% (0.06115) | 90.09th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.40% (0.00404) | 74.54th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.40% (0.00404) | 73.01th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.40% (0.00404) | 69.59th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.54% (0.03535) | 84.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.54% (0.03535) | 83.33th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.54% (0.03535) | 66.49th | v2 (v2022.01.01) |
No CWE recorded.
References (9)
- http://inoa.net/qmail-tls/vu555316.patch x_refsource_CONFIRMPatch
- http://securityreason.com/securityalert/8144 third-party-advisoryx_refsource_SREASON
- http://www.kb.cert.org/vuls/id/555316 third-party-advisoryx_refsource_CERT-VNUS Government Resource
- http://www.kb.cert.org/vuls/id/MAPG-8D9M5Q x_refsource_MISCUS Government Resource
- http://www.postfix.org/CVE-2011-0411.html x_refsource_MISCExploitVendor Advisory
- http://www.securityfocus.com/archive/1/516901 mailing-listx_refsource_BUGTRAQExploit
- http://www.securityfocus.com/bid/46767 vdb-entryx_refsource_BID
- http://www.vupen.com/english/advisories/2011/0612 vdb-entryx_refsource_VUPENVendor Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/65932 vdb-entryx_refsource_XF
| Link | Providers | Tags |
|---|---|---|
| http://inoa.net/qmail-tls/vu555316.patch | x_refsource_CONFIRMPatch | |
| http://securityreason.com/securityalert/8144 | third-party-advisoryx_refsource_SREASON | |
| http://www.kb.cert.org/vuls/id/555316 | third-party-advisoryx_refsource_CERT-VNUS Government Resource | |
| http://www.kb.cert.org/vuls/id/MAPG-8D9M5Q | x_refsource_MISCUS Government Resource | |
| http://www.postfix.org/CVE-2011-0411.html | x_refsource_MISCExploitVendor Advisory | |
| http://www.securityfocus.com/archive/1/516901 | mailing-listx_refsource_BUGTRAQExploit | |
| http://www.securityfocus.com/bid/46767 | vdb-entryx_refsource_BID | |
| http://www.vupen.com/english/advisories/2011/0612 | vdb-entryx_refsource_VUPENVendor Advisory | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/65932 | vdb-entryx_refsource_XF |
Change history (0)
No recorded changes yet.