Topic

An update for java-1.7.0-openjdk is now available for Red Hat Enterprise Linux 6 and Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

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):

• Multiple flaws were discovered in the RMI and Hotspot components in OpenJDK. An untrusted Java application or applet could use these flaws to completely bypass Java sandbox restrictions. (CVE-2017-10285, CVE-2017-10346)
• It was discovered that the Kerberos client implementation in the Libraries component of OpenJDK used the sname field from the plain text part rather than encrypted part of the KDC reply message. A man-in-the-middle attacker could possibly use this flaw to impersonate Kerberos services to Java applications acting as Kerberos clients. (CVE-2017-10388)
• It was discovered that the Security component of OpenJDK generated weak password-based encryption keys used to protect private keys stored in key stores. This made it easier to perform password guessing attacks to decrypt stored keys if an attacker could gain access to a key store. (CVE-2017-10356)
• Multiple flaws were found in the Smart Card IO and Security components in OpenJDK. An untrusted Java application or applet could use these flaws to bypass certain Java sandbox restrictions. (CVE-2017-10274, CVE-2017-10193)
• It was found that the FtpClient implementation in the Networking component of OpenJDK did not set connect and read timeouts by default. A malicious FTP server or a man-in-the-middle attacker could use this flaw to block execution of a Java application connecting to an FTP server. (CVE-2017-10355)
• It was found that the HttpURLConnection and HttpsURLConnection classes in the Networking component of OpenJDK failed to check for newline characters embedded in URLs. An attacker able to make a Java application perform an HTTP request using an attacker provided URL could possibly inject additional headers into the request. (CVE-2017-10295)
• It was discovered that the Security component of OpenJDK could fail to properly enforce restrictions defined for processing of X.509 certificate chains. A remote attacker could possibly use this flaw to make Java accept certificate using one of the disabled algorithms. (CVE-2017-10198)
• It was discovered that multiple classes in the JAXP, Serialization, Libraries, and JAX-WS components of OpenJDK did not limit the amount of memory allocated when creating object instances from the serialized form. A specially-crafted input could cause a Java application to use an excessive amount of memory when deserialized. (CVE-2017-10349, CVE-2017-10357, CVE-2017-10347, CVE-2017-10281, CVE-2017-10345, CVE-2017-10348, CVE-2017-10350)

Bug Fix(es):

• Previously, OpenJDK could not handle situations when the kernel blocked on a read even when polling the socket indicated that a read is possible. As a consequence, OpenJDK could hang indefinitely. With this update, OpenJDK polls with a timeout and performs a non-blocking read on success, and it no longer hangs in these situations. (BZ#1508357)

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

All running instances of OpenJDK Java must be restarted for this update to take effect.

Affected Products

• Red Hat Enterprise Linux Server 7 x86_64
• Red Hat Enterprise Linux Server 6 x86_64
• Red Hat Enterprise Linux Server 6 i386
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 7.7 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 7.6 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 7.5 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 7.4 x86_64
• Red Hat Enterprise Linux Server - AUS 7.4 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 i386
• Red Hat Enterprise Linux Workstation 7 x86_64
• Red Hat Enterprise Linux Workstation 6 x86_64
• Red Hat Enterprise Linux Desktop 7 x86_64
• Red Hat Enterprise Linux Desktop 6 x86_64
• Red Hat Enterprise Linux Desktop 6 i386
• Red Hat Enterprise Linux for IBM z Systems 7 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 7.7 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 7.6 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 7.5 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 7.4 s390x
• Red Hat Enterprise Linux for Power, big endian 7 ppc64
• Red Hat Enterprise Linux for Power, big endian - Extended Update Support 7.7 ppc64
• Red Hat Enterprise Linux for Power, big endian - Extended Update Support 7.6 ppc64
• Red Hat Enterprise Linux for Power, big endian - Extended Update Support 7.5 ppc64
• Red Hat Enterprise Linux for Power, big endian - Extended Update Support 7.4 ppc64
• Red Hat Enterprise Linux for Scientific Computing 7 x86_64
• Red Hat Enterprise Linux EUS Compute Node 7.7 x86_64
• Red Hat Enterprise Linux EUS Compute Node 7.6 x86_64
• Red Hat Enterprise Linux EUS Compute Node 7.5 x86_64
• Red Hat Enterprise Linux EUS Compute Node 7.4 x86_64
• Red Hat Enterprise Linux Server - AUS 7.7 x86_64
• Red Hat Enterprise Linux Server - AUS 7.6 x86_64
• Red Hat Enterprise Linux Workstation 6 i386
• Red Hat Enterprise Linux for Power, little endian 7 ppc64le
• Red Hat Enterprise Linux for Scientific Computing 6 x86_64
• Red Hat Enterprise Linux for Power, little endian - Extended Update Support 7.7 ppc64le
• Red Hat Enterprise Linux for Power, little endian - Extended Update Support 7.6 ppc64le
• Red Hat Enterprise Linux for Power, little endian - Extended Update Support 7.5 ppc64le
• Red Hat Enterprise Linux for Power, little endian - Extended Update Support 7.4 ppc64le
• Red Hat Enterprise Linux Server - TUS 7.7 x86_64
• Red Hat Enterprise Linux Server - TUS 7.6 x86_64
• Red Hat Enterprise Linux Server - TUS 7.4 x86_64
• Red Hat Enterprise Linux for ARM 64 7 aarch64
• Red Hat Enterprise Linux for Power 9 7 ppc64le
• Red Hat Enterprise Linux Server (for IBM Power LE) - Update Services for SAP Solutions 7.7 ppc64le
• Red Hat Enterprise Linux Server (for IBM Power LE) - Update Services for SAP Solutions 7.6 ppc64le
• Red Hat Enterprise Linux Server (for IBM Power LE) - Update Services for SAP Solutions 7.4 ppc64le
• Red Hat Enterprise Linux Server - Update Services for SAP Solutions 7.7 x86_64
• Red Hat Enterprise Linux Server - Update Services for SAP Solutions 7.6 x86_64
• Red Hat Enterprise Linux Server - Update Services for SAP Solutions 7.4 x86_64

Fixes

• BZ - 1471715 - CVE-2017-10193 OpenJDK: incorrect key size constraint check (Security, 8179101)
• BZ - 1472320 - CVE-2017-10198 OpenJDK: incorrect enforcement of certificate path restrictions (Security, 8179998)
• BZ - 1501868 - CVE-2017-10285 OpenJDK: incorrect privilege use when handling unreferenced objects (RMI, 8174966)
• BZ - 1501873 - CVE-2017-10346 OpenJDK: insufficient loader constraints checks for invokespecial (Hotspot, 8180711)
• BZ - 1502038 - CVE-2017-10388 OpenJDK: use of unprotected sname in Kerberos client (Libraries, 8178794)
• BZ - 1502053 - CVE-2017-10274 OpenJDK: CardImpl incorrect state handling (Smart Card IO, 8169026)
• BZ - 1502611 - CVE-2017-10349 OpenJDK: unbounded memory allocation in PredicatedNodeTest deserialization (JAXP, 8181327)
• BZ - 1502614 - CVE-2017-10357 OpenJDK: unbounded memory allocation in ObjectInputStream deserialization (Serialization, 8181597)
• BZ - 1502629 - CVE-2017-10348 OpenJDK: multiple unbounded memory allocations in deserialization (Libraries, 8181432)
• BZ - 1502632 - CVE-2017-10347 OpenJDK: unbounded memory allocation in SimpleTimeZone deserialization (Serialization, 8181323)
• BZ - 1502640 - CVE-2017-10350 OpenJDK: unbounded memory allocation in JAXWSExceptionBase deserialization (JAX-WS, 8181100)
• BZ - 1502649 - CVE-2017-10281 OpenJDK: multiple unbounded memory allocations in deserialization (Serialization, 8174109)
• BZ - 1502687 - CVE-2017-10295 OpenJDK: HTTP client insufficient check for newline in URLs (Networking, 8176751)
• BZ - 1502858 - CVE-2017-10345 OpenJDK: unbounded resource use in JceKeyStore deserialization (Serialization, 8181370)
• BZ - 1502869 - CVE-2017-10355 OpenJDK: no default network operations timeouts in FtpClient (Networking, 8181612)
• BZ - 1503169 - CVE-2017-10356 OpenJDK: weak protection of key stores against brute forcing (Security, 8181692)

CVEs

• CVE-2017-10193
• CVE-2017-10198
• CVE-2017-10274
• CVE-2017-10281
• CVE-2017-10285
• CVE-2017-10295
• CVE-2017-10345
• CVE-2017-10346
• CVE-2017-10347
• CVE-2017-10348
• CVE-2017-10349
• CVE-2017-10350
• CVE-2017-10355
• CVE-2017-10356
• CVE-2017-10357
• CVE-2017-10388

References

• https://access.redhat.com/security/updates/classification/#important