Updated java-1.7.0-openjdk packages that fix multiple security issues are now available for Red Hat Enterprise Linux 6 and 7.

Red Hat Product Security has rated this update as having Critical security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

The java-1.7.0-openjdk packages provide the OpenJDK 7 Java Runtime Environment and the OpenJDK 7 Java Software Development Kit.

Multiple flaws were discovered in the 2D, CORBA, JMX, Libraries and RMI components in OpenJDK. An untrusted Java application or applet could use these flaws to bypass Java sandbox restrictions.
(CVE-2015-4760, CVE-2015-2628, CVE-2015-4731, CVE-2015-2590, CVE-2015-4732, CVE-2015-4733)

A flaw was found in the way the Libraries component of OpenJDK verified Online Certificate Status Protocol (OCSP) responses. An OCSP response with no nextUpdate date specified was incorrectly handled as having unlimited validity, possibly causing a revoked X.509 certificate to be interpreted as valid. (CVE-2015-4748)

It was discovered that the JCE component in OpenJDK failed to use constant time comparisons in multiple cases. An attacker could possibly use these flaws to disclose sensitive information by measuring the time used to perform operations using these non-constant time comparisons. (CVE-2015-2601)

A flaw was found in the RC4 encryption algorithm. When using certain keys for RC4 encryption, an attacker could obtain portions of the plain text from the cipher text without the knowledge of the encryption key. (CVE-2015-2808)

Note: With this update, OpenJDK now disables RC4 TLS/SSL cipher suites by default to address the CVE-2015-2808 issue. Refer to Red Hat Bugzilla bug 1207101, linked to in the References section, for additional details about this change.

A flaw was found in the way the TLS protocol composed the Diffie-Hellman (DH) key exchange. A man-in-the-middle attacker could use this flaw to force the use of weak 512 bit export-grade keys during the key exchange, allowing them do decrypt all traffic.
(CVE-2015-4000)

Note: This update forces the TLS/SSL client implementation in OpenJDK to reject DH key sizes below 768 bits, which prevents sessions to be downgraded to export-grade keys. Refer to Red Hat Bugzilla bug 1223211, linked to in the References section, for additional details about this change.

It was discovered that the JNDI component in OpenJDK did not handle DNS resolutions correctly. An attacker able to trigger such DNS errors could cause a Java application using JNDI to consume memory and CPU time, and possibly block further DNS resolution. (CVE-2015-4749)

Multiple information leak flaws were found in the JMX and 2D components in OpenJDK. An untrusted Java application or applet could use this flaw to bypass certain Java sandbox restrictions.
(CVE-2015-2621, CVE-2015-2632)

A flaw was found in the way the JSSE component in OpenJDK performed X.509 certificate identity verification when establishing a TLS/SSL connection to a host identified by an IP address. In certain cases, the certificate was accepted as valid if it was issued for a host name to which the IP address resolves rather than for the IP address.
(CVE-2015-2625)

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.

All users of java-1.7.0-openjdk are advised to upgrade to these updated packages, which resolve these issues. All running instances of OpenJDK Java must be restarted for the update to take effect.

IBM Java was updated to version 6 SR16 FP7 (6.0-16.7) to fix several security issues and bugs.

The following vulnerabilities were fixed :

  - CVE-2015-1931: IBM Java Security Components store plain     text data in memory dumps, which could allow a local     attacker to obtain information to aid in further attacks     against the system.

  - CVE-2015-2590: Easily exploitable vulnerability in the     Libraries component allowed successful unauthenticated     network attacks via multiple protocols. Successful     attack of this vulnerability could have resulted in     unauthorized Operating System takeover including     arbitrary code execution.

  - CVE-2015-2601: Easily exploitable vulnerability in the     JCE component allowed successful unauthenticated network     attacks via multiple protocols. Successful attack of     this vulnerability could have resulted in unauthorized     read access to a subset of Java accessible data.

  - CVE-2015-2621: Easily exploitable vulnerability in the     JMX component allowed successful unauthenticated network     attacks via multiple protocols. Successful attack of     this vulnerability could have resulted in unauthorized     read access to a subset of Java accessible data.

  - CVE-2015-2625: Very difficult to exploit vulnerability     in the JSSE component allowed successful unauthenticated     network attacks via SSL/TLS. Successful attack of this     vulnerability could have resulted in unauthorized read     access to a subset of Java accessible data.

  - CVE-2015-2632: Easily exploitable vulnerability in the     2D component allowed successful unauthenticated network     attacks via multiple protocols. Successful attack of     this vulnerability could have resulted in unauthorized     read access to a subset of Java accessible data.

  - CVE-2015-2637: Easily exploitable vulnerability in the     2D component allowed successful unauthenticated network     attacks via multiple protocols. Successful attack of     this vulnerability could have resulted in unauthorized     read access to a subset of Java accessible data.

  - CVE-2015-2638: Easily exploitable vulnerability in the     2D component allowed successful unauthenticated network     attacks via multiple protocols. Successful attack of     this vulnerability could have resulted in unauthorized     Operating System takeover including arbitrary code     execution.

  - CVE-2015-2664: Difficult to exploit vulnerability in the     Deployment component requiring logon to Operating     System. Successful attack of this vulnerability could     have resulted in unauthorized Operating System takeover     including arbitrary code execution.

  - CVE-2015-2808: Very difficult to exploit vulnerability     in the JSSE component allowed successful unauthenticated     network attacks via SSL/TLS. Successful attack of this     vulnerability could have resulted in unauthorized     update, insert or delete access to some Java accessible     data as well as read access to a subset of Java     accessible data.

  - CVE-2015-4000: Very difficult to exploit vulnerability     in the JSSE component allowed successful unauthenticated     network attacks via SSL/TLS. Successful attack of this     vulnerability could have resulted in unauthorized     update, insert or delete access to some Java accessible     data as well as read access to a subset of Java Embedded     accessible data. (bnc#935540)

  - CVE-2015-4731: Easily exploitable vulnerability in the     JMX component allowed successful unauthenticated network     attacks via multiple protocols. Successful attack of     this vulnerability could have resulted in unauthorized     Operating System takeover including arbitrary code     execution.

  - CVE-2015-4732: Easily exploitable vulnerability in the     Libraries component allowed successful unauthenticated     network attacks via multiple protocols. Successful     attack of this vulnerability could have resulted in     unauthorized Operating System takeover including     arbitrary code execution.

  - CVE-2015-4733: Easily exploitable vulnerability in the     RMI component allowed successful unauthenticated network     attacks via multiple protocols. Successful attack of     this vulnerability could have resulted in unauthorized     Operating System takeover including arbitrary code     execution.

  - CVE-2015-4748: Very difficult to exploit vulnerability     in the Security component allowed successful     unauthenticated network attacks via OCSP. Successful     attack of this vulnerability could have resulted in     unauthorized Operating System takeover including     arbitrary code execution.

  - CVE-2015-4749: Difficult to exploit vulnerability in the     JNDI component allowed successful unauthenticated     network attacks via multiple protocols. Successful     attack of this vulnerability could have resulted in     unauthorized ability to cause a partial denial of     service (partial DOS).

  - CVE-2015-4760: Easily exploitable vulnerability in the     2D component allowed successful unauthenticated network     attacks via multiple protocols. Successful attack of     this vulnerability could have resulted in unauthorized     Operating System takeover including arbitrary code     execution.

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The version of Oracle (formerly Sun) Java SE or Java for Business installed on the remote host is prior to 8 Update 51, 7 Update 85, or 6 Update 101. It is, therefore, affected by security vulnerabilities in the following components :

 - 2D
 - CORBA
 - Deployment
 - Hotspot
 - Install
 - JCE
 - JMX
 - JNDI
 - JSSE
 - Libraries
 - RMI
 - Security

The Oracle Java SE installed on the remote host is version 6 prior to Update 101, 7 prior to Update 85, or 8 prior to Update 51 and is affected by multiple vulnerabilities: 

 - A flaw in the 'ObjectInputStream::readSerialData()' function in 'share/classes/java/io/ObjectInputStream.java' that is triggered when handling OIS data allowing a context-dependent attacker to execute arbitrary code. (CVE-2015-2590) 
 - An unspecified flaw related to the Hotspot component may allow a context-dependent attacker to have an impact on integrity. (CVE-2015-2596) 
 - A flaw in the JCE component as various cryptographic operations use non-constant time comparisons allowing a remote attacker to conduct timing attacks in order to possibly glean sensitive information. (CVE-2015-2601)  
 - A flaw in the 'ECDH_Derive()' function in 'share/native/sun/security/ec/impl/ec.c' related to missing EC parameter validation when performing ECDH key derivation allowing a remote attacker to disclose potentially sensitive information. (CVE-2015-2613) 
 - An unspecified flaw related to the 2D component may allow a context-dependent attacker to gain access to sensitive information. (CVE-2015-2619) 
 - A flaw in the 'RMIConnectionImpl' constructor in 'share/classes/javax/management/remote/rmi/RMIConnectionImpl.java'. The issue is triggered due to improper permission checks when creating repository class loaders allowing a context-dependent attacker to bypass sandbox restrictions and disclose sensitive information.  (CVE-2015-2621) 
 - A flaw in the JSSE component that is triggered when performing X.509 certificate identity checks allowing a remote attacker to have a certificate for another domain being accepted as valid. (CVE-2015-2625) 
 - An unspecified flaw related to the Install component allowing a remote attacker to gain access to sensitive information. (CVE-2015-2627) 
 - A typecasting flaw in 'share/classes/com/sun/corba/se/impl/io/IIOPInputStream.java' that is triggered when handling IIOP operations allowing a context-dependent attacker to potentially execute arbitrary code. (CVE-2015-2628) 
 - International Components for Unicode for C/C++ (ICU4C) contains an integer overflow condition in the 'LETableReference::verifyLength()' function in 'layout/LETableReference.h'. With a specially crafted font, a context-dependent attacker can crash an application linked against the library or potentially disclose memory contents. (CVE-2015-2632) 
 - An unspecified flaw related to the 2D component allowing a context-dependent attacker to gain access to sensitive information. (CVE-2015-2637) 
 - An unspecified flaw related to the 2D component allowing a context-dependent attacker to execute arbitrary code. (CVE-2015-2638) 
 - A NULL pointer dereference flaw in 'share/classes/com/sun/crypto/provider/GCTR.java' related to the GCM (Galois Counter Mode) implementation. The issue is triggered when performing encryption using a block cipher in GCM mode and may allow a remote attacker to cause a crash. (CVE-2015-2659) 
 - An unspecified flaw in the Deployment component allowing a local attacker to gain elevated privileges. (CVE-2015-2664) 
 - An unspecified flaw related to the Deployment component may allow a remote attacker to have an impact on confidentiality and integrity. (CVE-2015-4729) 
 - A flaw in 'share/classes/javax/management/MBeanServerInvocationHandler.java' is triggered when handling MBean connection proxy classes allowing a context-dependent attacker to bypass sandbox restrictions and potentially execute arbitrary code. (CVE-2015-4731) 
 - A flaw in 'share/classes/java/io/ObjectInputStream.java' and 'share/classes/java/io/SerialCallbackContext.java' related to insufficient context checks allowing a context-dependent attacker to potentially execute arbitrary code. (CVE-2015-4732) 
 - A flaw in the 'RemoteObjectInvocationHandler::invoke()' function in 'share/classes/java/rmi/server/RemoteObjectInvocationHandler.java'. The issue is triggered as calls to the finalize() method are permitted allowing a context-dependent attacker to bypass sandbox protections and potentially execute arbitrary code. (CVE-2015-4733) 
 - An unspecified flaw related to the Deployment component may allow a context-dependent attacker to execute arbitrary code. (CVE-2015-4736) 
  -  A flaw that is triggered when handling Online Certificate Status Protocol (OCSP) responses with no 'nextUpdate' date specified allowing a remote attacker to cause an application to accept a revoked X.509 certificate. (CVE-2015-4748) 
 - A flaw in the 'DnsClient::query()' function in 'share/classes/com/sun/jndi/dns/DnsClient.java'. The issue is triggered as JNDI DnsClient's exception handling fails to release request information allowing a remote attacker to exhaust memory resources and cause a denial of service. (CVE-2015-4749) 
 -International Components for Unicode for C/C++ (ICU4C) contains overflow conditions in the layout engine. With a specially crafted font, a context-dependent attacker can cause a buffer overflow, crashing an application linked against the library or potentially allowing execution of arbitrary code. (CVE-2015-4760) 

ID	Name	Product	Family	Published	Updated	Severity
84788	RHEL 6 / 7 : java-1.7.0-openjdk (RHSA-2015:1229) (Bar Mitzvah) (Logjam)	Nessus	Red Hat Local Security Checks	7/16/2015	4/25/2023	low
85869	SUSE SLES11 Security Update : java-1_6_0-ibm (SUSE-SU-2015:1509-1) (Bar Mitzvah) (Logjam)	Nessus	SuSE Local Security Checks	9/9/2015	12/5/2022	low
700651	Oracle Java SE Multiple 6 < Update 101 / 7 < Update 85 / 8 < Update 51 Multiple Vulnerabilities (July 2015 CPU) (Bar Mitzvah)	Nessus Network Monitor	Web Clients	5/2/2019	5/2/2019	critical
8918	Oracle Java SE 6 < Update 101 / 7 < Update 85 / 8 < Update 51 Multiple Vulnerabilities	Nessus Network Monitor	Web Clients	9/30/2015	3/6/2019	critical

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