--- title: "CVE-2018-2800\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-2018-2800?format=md keywords: index, follow --- # CVE-2018-2800 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 **4.2 · Medium** [Score breakdown](https://ubuntu.com/security/CVE-2018-2800?format=md#impact-score) Toggle side navigation ## Description Vulnerability in the Java SE, JRockit component of Oracle Java SE (subcomponent: RMI). Supported versions that are affected are Java SE: 6u181, 7u171 and 8u162; JRockit: R28.3.17. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Java SE, JRockit. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Java SE, JRockit accessible data as well as unauthorized read access to a subset of Java SE, JRockit accessible data. Note: This vulnerability can only be exploited by supplying data to APIs in the specified Component without using Untrusted Java Web Start applications or Untrusted Java applets, such as through a web service. CVSS 3.0 Base Score 4.2 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N). ### From the Ubuntu Security Team Moritz Bechler discovered that the RMI component of OpenJDK enabled HTTP transport for RMI servers by default. A remote attacker could use this to gain access to restricted services. [Read the notes from the security team](https://ubuntu.com/security/CVE-2018-2800?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 7u181-2.6.14-0ubuntu0.1 | | 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) Oracle note on this issue: Server side HTTP-tunneled RMI connections have been disabled by default in this release. This behavior can be reverted by setting the runtime property sun.rmi.server.disableIncomingHttp property to false. Note, this should not be confused with the sun.rmi.server.disableHttp property, which disables HTTP-tunneling on the client side and is false by default. ## Severity score breakdown CVSS version: CVSS v3.0 **Base score** 4.2 · Medium * Base metrics | Parameter | Value | | --- | --- | | Attack vector | Network | | Attack complexity | High | | Privileges required | None | | User interaction | Required | | Scope | Unchanged | | Confidentiality impact | Low | | Integrity impact | Low | | Availability impact | None | * Scores | Parameter | Value | | --- | --- | | Base score | 4.2 · Medium | | Exploitability score | - | | Impact score | - | **Vector:** CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N ## References * [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-2800) * [NVD](https://nvd.nist.gov/vuln/detail/CVE-2018-2800) * [Launchpad](https://launchpad.net/bugs/cve/CVE-2018-2800) * [Debian](https://security-tracker.debian.org/tracker/CVE-2018-2800) ### Related Ubuntu Security Notices (USN) + [USN-3691-1](https://usn.ubuntu.com/USN-3691-1) + OpenJDK 7 vulnerabilities + 21 June 2018 + [USN-3644-1](https://usn.ubuntu.com/USN-3644-1) + OpenJDK 8 vulnerabilities + 11 May 2018 ### Other references * *