java security update

CentOS Errata and Security Advisory CESA-2017:0269

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

Security Fix(es):

• It was discovered that the RMI registry and DCG implementations in the RMI
  component of OpenJDK performed deserialization of untrusted inputs. A remote
  attacker could possibly use this flaw to execute arbitrary code with the
  privileges of RMI registry or a Java RMI application. (CVE-2017-3241)

This issue was addressed by introducing whitelists of classes that can be
deserialized by RMI registry or DCG. These whitelists can be customized using
the newly introduced sun.rmi.registry.registryFilter and
sun.rmi.transport.dgcFilter security properties.

• Multiple flaws were discovered in the Libraries and Hotspot components in
  OpenJDK. An untrusted Java application or applet could use these flaws to
  completely bypass Java sandbox restrictions. (CVE-2017-3272, CVE-2017-3289)

• A covert timing channel flaw was found in the DSA implementation in the
  Libraries component of OpenJDK. A remote attacker could possibly use this flaw
  to extract certain information about the used key via a timing side channel.
  (CVE-2016-5548)

• It was discovered that the Libraries component of OpenJDK accepted ECSDA
  signatures using non-canonical DER encoding. This could cause a Java application
  to accept signature in an incorrect format not accepted by other cryptographic
  tools. (CVE-2016-5546)

• It was discovered that the 2D component of OpenJDK performed parsing of iTXt
  and zTXt PNG image chunks even when configured to ignore metadata. An attacker
  able to make a Java application parse a specially crafted PNG image could cause
  the application to consume an excessive amount of memory. (CVE-2017-3253)

• It was discovered that the Libraries component of OpenJDK did not validate the
  length of the object identifier read from the DER input before allocating memory
  to store the OID. An attacker able to make a Java application decode a specially
  crafted DER input could cause the application to consume an excessive amount of
  memory. (CVE-2016-5547)

• It was discovered that the JAAS component of OpenJDK did not use the correct
  way to extract user DN from the result of the user search LDAP query. A
  specially crafted user LDAP entry could cause the application to use an
  incorrect DN. (CVE-2017-3252)

• It was discovered that the Networking component of OpenJDK failed to properly
  parse user info from the URL. A remote attacker could cause a Java application
  to incorrectly parse an attacker supplied URL and interpret it differently from
  other applications processing the same URL. (CVE-2016-5552)

• Multiple flaws were found in the Networking components in OpenJDK. An
  untrusted Java application or applet could use these flaws to bypass certain
  Java sandbox restrictions. (CVE-2017-3261, CVE-2017-3231)

• A flaw was found in the way the DES/3DES cipher was used as part of the
  TLS/SSL protocol. A man-in-the-middle attacker could use this flaw to recover
  some plaintext data by capturing large amounts of encrypted traffic between
  TLS/SSL server and client if the communication used a DES/3DES based
  ciphersuite. (CVE-2016-2183)

This update mitigates the CVE-2016-2183 issue by adding 3DES cipher suites to
the list of legacy algorithms (defined using the jdk.tls.legacyAlgorithms
security property) so they are only used if connecting TLS/SSL client and server
do not share any other non-legacy cipher suite.

Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-announce/2017-February/084431.html
https://lists.centos.org/pipermail/centos-announce/2017-February/084432.html
https://lists.centos.org/pipermail/centos-announce/2017-February/084433.html

Affected packages:
java-1.7.0-openjdk
java-1.7.0-openjdk-accessibility
java-1.7.0-openjdk-demo
java-1.7.0-openjdk-devel
java-1.7.0-openjdk-headless
java-1.7.0-openjdk-javadoc
java-1.7.0-openjdk-src

Upstream details at:
https://access.redhat.com/errata/RHSA-2017:0269