---
title: "CVE-2018-2783\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-2018-2783?format=md
keywords: index, follow
---

# CVE-2018-2783

Publication date 18 April 2018

Last updated 25 August 2025

---

Ubuntu priority

**Medium**

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

## Cvss 3 Severity Score

**7.4 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2018-2783?format=md#impact-score)

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## Description

Vulnerability in the Java SE, Java SE Embedded, JRockit component of Oracle
Java SE (subcomponent: Security). Supported versions that are affected are
Java SE: 6u181, 7u161 and 8u152; Java SE Embedded: 8u152; JRockit:
R28.3.17. Difficult to exploit vulnerability allows unauthenticated
attacker with network access via multiple protocols to compromise Java SE,
Java SE Embedded, JRockit. Successful attacks of this vulnerability can
result in unauthorized creation, deletion or modification access to
critical data or all Java SE, Java SE Embedded, JRockit accessible data as
well as unauthorized access to critical data or complete access to all Java
SE, Java SE Embedded, JRockit accessible data. Note: Applies to client and
server deployment of Java. This vulnerability can be exploited through
sandboxed Java Web Start applications and sandboxed Java applets. It can
also be exploited by supplying data to APIs in the specified Component
without using sandboxed Java Web Start applications or sandboxed Java
applets, such as through a web service. CVSS 3.0 Base Score 7.4
(Confidentiality and Integrity impacts). CVSS Vector:
(CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N).

### From the Ubuntu Security Team

David Benjamin discovered a vulnerability in the Security component
of OpenJDK related to data integrity and confidentiality. A remote
attacker could possibly use this to expose sensitive information.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2018-2783?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| openjdk-6 | 19.04 disco | Not in release |
| 18.10 cosmic | Not in release |
| 18.04 LTS bionic | Not in release |
| 17.10 artful | Not in release |
| 16.04 LTS xenial | Not in release |
| 14.04 LTS trusty | Not in release |
| openjdk-7 | 19.04 disco | Not in release |
| 18.10 cosmic | Not in release |
| 18.04 LTS bionic | Not in release |
| 17.10 artful | Not in release |
| 16.04 LTS xenial | Not in release |
| 14.04 LTS trusty | Fixed 7u171-2.6.13-0ubuntu0.14.04.2 |
| openjdk-8 | 19.04 disco | Not affected |
| 18.10 cosmic | Not affected |
| 18.04 LTS bionic | Fixed 8u171-b11-0ubuntu0.18.04.1 |
| 17.10 artful | Fixed 8u171-b11-0ubuntu0.17.10.1 |
| 16.04 LTS xenial | Fixed 8u171-b11-0ubuntu0.16.04.1 |
| 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)

## Notes

---

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

fixed upstream in 6u191, 7u171, and 8u161

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

7.4 · High

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 7.4 · High |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-2783)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2018-2783)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2018-2783)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2018-2783)

### Related Ubuntu Security Notices (USN)

+ [USN-3644-1](https://usn.ubuntu.com/USN-3644-1)
+ OpenJDK 8 vulnerabilities
+ 11 May 2018

### Other references

* <http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html>
* <https://www.cve.org/CVERecord?id=CVE-2018-2783>