Your submission was sent successfully! Close

You have successfully unsubscribed! Close

Thank you for signing up for our newsletter!
In these regular emails you will find the latest updates about Ubuntu and upcoming events where you can meet our team.Close


Published: 18 April 2018

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.


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.



Cvss 3 Severity Score


Score breakdown


Package Release Status
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

xenial Does not exist

trusty Does not exist
(trusty was needed)
upstream Needs triage

Launchpad, Ubuntu, Debian
Released (8u171-b11-0ubuntu0.17.10.1)
Released (8u171-b11-0ubuntu0.18.04.1)
cosmic Not vulnerable
disco Not vulnerable
trusty Does not exist

upstream Needs triage

Released (8u171-b11-0ubuntu0.16.04.1)
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

disco Does not exist

Released (7u181-2.6.14-0ubuntu0.1)
upstream Needs triage

xenial Does not exist

Severity score breakdown

Parameter Value
Base score 4.2
Attack vector Network
Attack complexity High
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality Low
Integrity impact Low
Availability impact None
Vector CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N