---
title: "CVE-2018-1084\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-2018-1084?format=md
keywords: index, follow
---

# CVE-2018-1084

Publication date 12 April 2018

Last updated 25 August 2025

---

Ubuntu priority

**Medium**

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

## Cvss 3 Severity Score

**7.5 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2018-1084?format=md#impact-score)

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## Description

corosync before version 2.4.4 is vulnerable to an integer overflow in
exec/totemcrypto.c.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| corosync | 19.04 disco | Not affected |
| 18.10 cosmic | Not affected |
| 18.04 LTS bionic | Fixed 2.4.3-0ubuntu1.1 |
| 17.10 artful | Ignored end of life |
| 16.04 LTS xenial | Fixed 2.3.5-3ubuntu2.3 |
| 14.04 LTS trusty | Not in release |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)
* [Patch details](https://ubuntu.com/security/CVE-2018-1084?format=md#patch-details)

### Patch details

For informational purposes only. We recommend not to cherry-pick updates. [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)

| Package | Patch details |
| --- | --- |
| corosync | * Upstream:   [fc1d541](https://github.com/corosync/corosync/commit/fc1d5418533c1faf21616b282c2559bed7d361c4) * Upstream:   [50e17ff](https://github.com/corosync/corosync/commit/50e17ffc736f0052e921c861b6953ba8938e4103) * Upstream:   [520a708](https://github.com/corosync/corosync/commit/520a7085b06cb0383a4f92bb0d7fbb748d9e97fe) * Upstream:   [08cb237](https://github.com/corosync/corosync/commit/08cb2372cd3bd63a910c2618a2cc86cad8885d78) * Upstream:   [b25b029](https://github.com/corosync/corosync/commit/b25b029fe186bacf089ab8136da58390945eb35c) |

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

7.5 · High

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 7.5 · High |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1084)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2018-1084)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2018-1084)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2018-1084)

### Related Ubuntu Security Notices (USN)

+ [USN-4000-1](https://usn.ubuntu.com/USN-4000-1)
+ Corosync vulnerability
+ 30 May 2019

### Other references

* <http://www.openwall.com/lists/oss-security/2018/04/12/2>
* <https://oss.clusterlabs.org/pipermail/users/2018-April/014856.html>
* <https://www.cve.org/CVERecord?id=CVE-2018-1084>