Bug 1568586 – CVE-2018-2825 OpenJDK: insufficient array type checks in VarHandle (Libraries, 8194233)

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Bug 1568586 - (CVE-2018-2825) CVE-2018-2825 OpenJDK: insufficient array type checks in VarHandle (Libraries, 8194233)

Summary:	CVE-2018-2825 OpenJDK: insufficient array type checks in VarHandle (Libraries...

Status:	CLOSED NOTABUG

Aliases:	CVE-2018-2825

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	urgent Severity urgent
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Assigned To:	Red Hat Product Security
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URL:
Whiteboard:	impact=critical,public=20180417,repor...
Keywords:	Security

Depends On:
Blocks:	1559778
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Reported:	2018-04-17 16:23 EDT by Tomas Hoger
Modified:	2018-05-16 12:27 EDT (History)
CC List:	3 users (show)

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Last Closed:	2018-04-17 16:28:47 EDT
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Description Tomas Hoger 2018-04-17 16:23:43 EDT

It was discovered that the Libraries component of OpenJDK failed to properly check array object type VarHandle in certain cases. An untrusted Java application or applet could use this flaw to bypass Java sandbox restrictions.

Comment 1 Tomas Hoger 2018-04-17 16:28:47 EDT

Affected functionality - VarHandle - was only introduced in OpenJDK 9.

Comment 2 Tomas Hoger 2018-04-17 17:01:54 EDT

Public now via Oracle CPU April 2018:

http://www.oracle.com/technetwork/security-advisory/cpuapr2018-3678067.html#AppendixJAVA

The issue was fixed in Oracle JDK 10.0.1.

Comment 3 Tomas Hoger 2018-04-20 16:52:50 EDT

OpenJDK 10 upstream commit:

http://hg.openjdk.java.net/jdk-updates/jdk10u/rev/a562e21b4bd2

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