dovecot: proxy destination host name not checked against SSL certificate name
Published Mar 7, 2013
5.8
MEDIUMCVSS 2.0
EPSS 1.32%
Description
Dovecot 2.0.x before 2.0.16, when ssl or starttls is enabled and hostname is used to define the proxy destination, does not verify that the server hostname matches a domain name in the subject's Common Name (CN) of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via a valid certificate for a different hostname.
Affected products
No data.
- 2.0.0
- 2.0.1
- 2.0.2
- 2.0.3
- 2.0.4
- 2.0.5
- 2.0.6
- 2.0.7
- 2.0.8
- 2.0.9
- 2.0.10
- 2.0.11
- 2.0.12
- 2.0.13
- 2.0.14
- 2.0.15
No data.
Red Hat Enterprise Linux 6
dovecot-1:2.0.9-5.el6
Fixed · RHSA-2013:0520
Red Hat Enterprise Linux 4
dovecot
Not affected
Red Hat Enterprise Linux 5
dovecot
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | dovecot-1:2.0.9-5.el6 | Fixed | RHSA-2013:0520 |
| Red Hat Enterprise Linux 4 | dovecot | Not affected | n/a |
| Red Hat Enterprise Linux 5 | dovecot | Not 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: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 (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.32% (0.01321) | 69.82th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.32% (0.01321) | 67.05th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.35% (0.00348) | 55.10th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.27% (0.00275) | 68.95th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.27% (0.00275) | 67.18th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.27% (0.00275) | 63.03th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.54% (0.01537) | 74.52th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.54% (0.01537) | 74.48th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.54% (0.01537) | 72.41th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.54% (0.01537) | 51.33th | v2 (v2022.01.01) |
References (12)
- http://hg.dovecot.org/dovecot-2.0/rev/5e9eaf63a6b1 x_refsource_CONFIRM
- http://rhn.redhat.com/errata/RHSA-2013-0520.html vendor-advisoryx_refsource_REDHATVendor Advisory
- http://secunia.com/advisories/46886 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/52311 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://www.dovecot.org/list/dovecot-news/2011-November/000200.html mailing-listx_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2011/11/18/5 mailing-listx_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2011/11/18/7 mailing-listx_refsource_MLIST
- https://access.redhat.com/security/cve/CVE-2011-4318 Vendor Advisory
- https://bugs.gentoo.org/show_bug.cgi?id=390887 x_refsource_MISC
- https://bugzilla.redhat.com/show_bug.cgi?id=754980 x_refsource_MISCIssue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2011-4318
- https://www.cve.org/CVERecord?id=CVE-2011-4318
| Link | Providers | Tags |
|---|---|---|
| http://hg.dovecot.org/dovecot-2.0/rev/5e9eaf63a6b1 | x_refsource_CONFIRM | |
| http://rhn.redhat.com/errata/RHSA-2013-0520.html | vendor-advisoryx_refsource_REDHATVendor Advisory | |
| http://secunia.com/advisories/46886 | third-party-advisoryx_refsource_SECUNIA | |
| http://secunia.com/advisories/52311 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://www.dovecot.org/list/dovecot-news/2011-November/000200.html | mailing-listx_refsource_MLIST | |
| http://www.openwall.com/lists/oss-security/2011/11/18/5 | mailing-listx_refsource_MLIST | |
| http://www.openwall.com/lists/oss-security/2011/11/18/7 | mailing-listx_refsource_MLIST | |
| https://access.redhat.com/security/cve/CVE-2011-4318 | Vendor Advisory | |
| https://bugs.gentoo.org/show_bug.cgi?id=390887 | x_refsource_MISC | |
| https://bugzilla.redhat.com/show_bug.cgi?id=754980 | x_refsource_MISCIssue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2011-4318 | ||
| https://www.cve.org/CVERecord?id=CVE-2011-4318 |
Change history (0)
No recorded changes yet.