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CVE-2018-2800

Publication date 18 April 2018

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

4.2 · Medium

Score breakdown

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

Status

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

Notes

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

Parameter Value
Base score 4.2 · Medium
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

References

Related Ubuntu Security Notices (USN)

    • USN-3691-1
    • OpenJDK 7 vulnerabilities
    • 21 June 2018
    • USN-3644-1
    • OpenJDK 8 vulnerabilities
    • 11 May 2018

Other references