libESMTP: Multiple certificate validation flaws
Published Mar 31, 2010
6.8
MEDIUMCVSS 2.0
EPSS 1.17%
Description
The match_component function in smtp-tls.c in libESMTP 1.0.3.r1, and possibly other versions including 1.0.4, treats two strings as equal if one is a substring of the other, which allows remote attackers to spoof trusted certificates via a crafted subjectAltName.
Affected products
No data.
- 0.1
- 0.1
- 0.2
- 0.3
- 0.4
- 0.5
- 0.6
- 0.6
- 0.6.1
- 0.7.0
- 0.7.1
- 0.8.0
- 0.8.1
- 0.8.2
- 0.8.3
- 0.8.4
- 0.8.5
- 0.8.6
- 0.8.7
- 0.8.8
- 0.8.9
- 0.8.10
- 0.8.10
- 0.8.11
- 0.8.12
- 1.0
- 1.0
- 1.0.1
- 1.0.2
- 1.0.3
- 1.0.3
- 1.0.4
No data.
Red Hat Enterprise Linux 6
libesmtp
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | libesmtp | Affected | n/a |
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 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 (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.17% (0.01166) | 66.15th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.17% (0.01166) | 63.10th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.39% (0.00388) | 57.87th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.45% (0.00446) | 75.81th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.45% (0.00446) | 74.23th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.45% (0.00446) | 70.99th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.21% (0.01213) | 66.61th | v2 (v2022.01.01) |
| Feb 17, 2023 | 1.21% (0.01213) | 66.22th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.21% (0.01213) | 64.21th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.21% (0.01213) | 40.54th | v2 (v2022.01.01) |
References (9)
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=311191 x_refsource_CONFIRMPatch
- http://lists.opensuse.org/opensuse-security-announce/2010-05/msg00001.html vendor-advisoryx_refsource_SUSE
- http://www.openwall.com/lists/oss-security/2010/03/03/6 mailing-listx_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2010/03/09/3 mailing-listx_refsource_MLIST
- http://www.vupen.com/english/advisories/2010/1107 vdb-entryx_refsource_VUPEN
- https://access.redhat.com/security/cve/CVE-2010-1194 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=571817 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2010-1194
- https://www.cve.org/CVERecord?id=CVE-2010-1194
| Link | Providers | Tags |
|---|---|---|
| http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=311191 | x_refsource_CONFIRMPatch | |
| http://lists.opensuse.org/opensuse-security-announce/2010-05/msg00001.html | vendor-advisoryx_refsource_SUSE | |
| http://www.openwall.com/lists/oss-security/2010/03/03/6 | mailing-listx_refsource_MLIST | |
| http://www.openwall.com/lists/oss-security/2010/03/09/3 | mailing-listx_refsource_MLIST | |
| http://www.vupen.com/english/advisories/2010/1107 | vdb-entryx_refsource_VUPEN | |
| https://access.redhat.com/security/cve/CVE-2010-1194 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=571817 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2010-1194 | ||
| https://www.cve.org/CVERecord?id=CVE-2010-1194 |
Change history (0)
No recorded changes yet.