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CVE-2015-3420
The ssl-proxy-openssl.c function in Dovecot before 2.2.17, when SSLv3 is disabled, allow remote attackers to cause a denial of service…
Medium5.9EPSS 2.8%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
The ssl-proxy-openssl.c function in Dovecot before 2.2.17, when SSLv3 is disabled, allow remote attackers to cause a denial of service (login process crash) via vectors related to handshake failures.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | Medium5.9 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 2.8% · top 13% of all CVEs (4 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.9.
Weakness
Affected products
n/a
- affected n/a
References (9)
- [oss-security] 20150428 Re: Re: CVE request: Dovecot remote DoS on TLS connections (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [dovecot] 20150424 [patch] TLS Handshake failures can crash imap-login (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [dovecot-news] 20150513 [Dovecot-news] v2.2.17 released (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- FEDORA-2015-7159 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- FEDORA-2015-7156 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- https://bugzilla.redhat.com/show_bug.cgi?id=1216057 (opens in a new tab)x_refsource_CONFIRMx_transferred
- FEDORA-2015-7089 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- [oss-security] 20150427 Re: CVE request: Dovecot remote DoS on TLS connections (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- 74335 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
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[](https://trackcve.app/cve/CVE-2015-3420)Record last updated .