aMSN: Improper SSL certificate validation (MITM) when connecting to the MSN server
Published Apr 20, 2010
5.8
MEDIUMCVSS 2.0
EPSS 1.31%
Description
aMSN (aka Alvaro's Messenger) 0.98.3 and earlier, when SSL is used, does not verify that the server hostname matches a domain name in the subject's Common Name (CN) field or a Subject Alternative Name field of the X.509 certificate, which allows man-in-the-middle attackers to spoof an MSN server via an arbitrary certificate.
Affected products
No data.
- ≤ 0.98.3
- 0.83
- 0.90
- 0.91
- 0.92
- 0.93
- 0.94
- 0.95
- 0.96
- 0.97
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:N
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 1, 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 (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.31% (0.01305) | 69.49th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.31% (0.01305) | 66.70th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.39% (0.00386) | 57.73th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.33% (0.00332) | 71.98th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.33% (0.00332) | 70.31th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.33% (0.00332) | 66.47th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.69% (0.02686) | 82.85th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.69% (0.02686) | 81.17th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.69% (0.02686) | 62.66th | v2 (v2022.01.01) |
References (19)
- http://amsn.svn.sourceforge.net/viewvc/amsn/trunk/?view=log&pathrev=11991 x_refsource_CONFIRMVendor Advisory
- http://amsn.svn.sourceforge.net/viewvc/amsn/trunk/amsn/proxy.tcl?r1=11886&r2=11991&pathrev=11991 x_refsource_CONFIRMVendor Advisory
- http://amsn.svn.sourceforge.net/viewvc/amsn/trunk/amsn/sip.tcl?r1=11953&r2=11991&pathrev=11991 x_refsource_CONFIRMVendor Advisory
- http://amsn.svn.sourceforge.net/viewvc/amsn/trunk/amsn/soap.tcl?r1=11891&r2=11991&pathrev=11991 x_refsource_CONFIRMVendor Advisory
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=572818 x_refsource_MISC
- http://lists.fedoraproject.org/pipermail/package-announce/2010-May/041046.html vendor-advisoryx_refsource_FEDORA
- http://lists.fedoraproject.org/pipermail/package-announce/2010-May/041079.html vendor-advisoryx_refsource_FEDORA
- http://seclists.org/bugtraq/2009/Jun/239 mailing-listx_refsource_BUGTRAQ
- http://secunia.com/advisories/35621 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/39796 third-party-advisoryx_refsource_SECUNIA
- http://www.opensource-archive.org/showthread.php?p=183821 x_refsource_CONFIRM
- http://www.openwall.com/lists/oss-security/2010/03/10/4 mailing-listx_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2010/04/01/4 mailing-listx_refsource_MLIST
- http://www.securityfocus.com/bid/35507 vdb-entryx_refsource_BID
- http://www.vupen.com/english/advisories/2010/1109 vdb-entryx_refsource_VUPEN
- https://access.redhat.com/security/cve/CVE-2010-0744 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=572232 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2010-0744
- https://www.cve.org/CVERecord?id=CVE-2010-0744
Change history (0)
No recorded changes yet.