---
title: "CVE-2017-15130\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2017-15130?format=md
keywords: index, follow
---

# CVE-2017-15130

Publication date 28 February 2018

Last updated 25 August 2025

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**5.9 · Medium**

[Score breakdown](https://ubuntu.com/security/CVE-2017-15130?format=md#impact-score)

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## Description

A denial of service flaw was found in dovecot before 2.2.34. An attacker
able to generate random SNI server names could exploit TLS SNI
configuration lookups, leading to excessive memory usage and the process to
restart.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2017-15130?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| dovecot | 17.10 artful | Fixed 1:2.2.27-3ubuntu1.3 |
| 16.04 LTS xenial | Fixed 1:2.2.22-1ubuntu2.7 |
| 14.04 LTS trusty | Fixed 1:2.2.9-1ubuntu2.4 |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Notes

---

### [mdeslaur](https://launchpad.net/~mdeslaur)

affects 2.2.0 - 2.2.33, 2.3.0

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

5.9 · Medium

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | High |
  | Privileges required | None |
  | User interaction | None |
  | Scope | Unchanged |
  | Confidentiality impact | None |
  | Integrity impact | None |
  | Availability impact | High |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 5.9 · Medium |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15130)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2017-15130)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2017-15130)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2017-15130)

### Related Ubuntu Security Notices (USN)

+ [USN-3587-2](https://usn.ubuntu.com/USN-3587-2)
+ Dovecot vulnerabilities
+ 2 April 2018

+ [USN-3587-1](https://usn.ubuntu.com/USN-3587-1)
+ Dovecot vulnerabilities
+ 5 March 2018

### Other references

* <http://www.openwall.com/lists/oss-security/2018/03/01/3>
* <https://www.dovecot.org/list/dovecot-news/2018-February/000370.html>
* <https://www.cve.org/CVERecord?id=CVE-2017-15130>