Scientific Linux Security Update : java-1.8.0-openjdk on SL6.x, SL7.x i386/x86_64

This script is Copyright (C) 2016 Tenable Network Security, Inc.


Synopsis :

The remote Scientific Linux host is missing one or more security
updates.

Description :

Security Fix(es) :

- It was discovered that the Hotspot component of OpenJDK
did not properly check arguments of the
System.arraycopy() function in certain cases. An
untrusted Java application or applet could use this flaw
to corrupt virtual machine's memory and completely
bypass Java sandbox restrictions. (CVE-2016-5582)

- It was discovered that the Hotspot component of OpenJDK
did not properly check received Java Debug Wire Protocol
(JDWP) packets. An attacker could possibly use this flaw
to send debugging commands to a Java program running
with debugging enabled if they could make victim's
browser send HTTP requests to the JDWP port of the
debugged application. (CVE-2016-5573)

- It was discovered that the Libraries component of
OpenJDK did not restrict the set of algorithms used for
Jar integrity verification. This flaw could allow an
attacker to modify content of the Jar file that used
weak signing key or hash algorithm. (CVE-2016-5542)

Note: After this update, MD2 hash algorithm and RSA keys with less
than 1024 bits are no longer allowed to be used for Jar integrity
verification by default. MD5 hash algorithm is expected to be disabled
by default in the future updates. A newly introduced security property
jdk.jar.disabledAlgorithms can be used to control the set of disabled
algorithms.

- A flaw was found in the way the JMX component of OpenJDK
handled classloaders. An untrusted Java application or
applet could use this flaw to bypass certain Java
sandbox restrictions. (CVE-2016-5554)

- A flaw was found in the way the Networking component of
OpenJDK handled HTTP proxy authentication. A Java
application could possibly expose HTTPS server
authentication credentials via a plain text network
connection to an HTTP proxy if proxy asked for
authentication. (CVE-2016-5597)

Note: After this update, Basic HTTP proxy authentication can no longer
be used when tunneling HTTPS connection through an HTTP proxy. Newly
introduced system properties jdk.http.auth.proxying.disabledSchemes
and jdk.http.auth.tunneling.disabledSchemes can be used to control
which authentication schemes can be requested by an HTTP proxy when
proxying HTTP and HTTPS connections respectively.

Note: If the web browser plug-in provided by the icedtea-web package
was installed, the issues exposed via Java applets could have been
exploited without user interaction if a user visited a malicious
website.

See also :

http://www.nessus.org/u?63bc219c

Solution :

Update the affected packages.

Risk factor :

High / CVSS Base Score : 9.3
(CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C)

Family: Scientific Linux Local Security Checks

Nessus Plugin ID: 94151 ()

Bugtraq ID:

CVE ID: CVE-2016-5542
CVE-2016-5554
CVE-2016-5573
CVE-2016-5582
CVE-2016-5597

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