RHSA-2020:2239 - Security Advisory

Topic

An update for java-1.8.0-ibm is now available for Red Hat Enterprise Linux 6 Supplementary.

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

IBM Java SE version 8 includes the IBM Java Runtime Environment and the IBM Java Software Development Kit.

This update upgrades IBM Java SE 8 to version 8 SR6-FP10.

Security Fix(es):

• OpenJDK: Improper handling of Kerberos proxy credentials (Kerberos, 8220302) (CVE-2019-2949)
• OpenJDK: Incorrect bounds checks in NIO Buffers (Libraries, 8234841) (CVE-2020-2803)
• OpenJDK: Incorrect type checks in MethodType.readObject() (Libraries, 8235274) (CVE-2020-2805)
• OpenJDK: Excessive memory usage in OID processing in X.509 certificate parsing (Libraries, 8234037) (CVE-2020-2654)
• OpenJDK: Re-use of single TLS session for new connections (JSSE, 8234408) (CVE-2020-2781)
• OpenJDK: CRLF injection into HTTP headers in HttpServer (Lightweight HTTP Server, 8234825) (CVE-2020-2800)
• OpenJDK: Regular expression DoS in Scanner (Concurrency, 8236201) (CVE-2020-2830)
• OpenJDK: Misplaced regular expression syntax error check in RegExpScanner (Scripting, 8223898) (CVE-2020-2754)
• OpenJDK: Incorrect handling of empty string nodes in regular expression Parser (Scripting, 8223904) (CVE-2020-2755)
• OpenJDK: Incorrect handling of references to uninitialized class descriptors during deserialization (Serialization, 8224541) (CVE-2020-2756)
• OpenJDK: Uncaught InstantiationError exception in ObjectStreamClass (Serialization, 8224549) (CVE-2020-2757)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

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 IBM Java must be restarted for this update to take effect.

Affected Products

• Red Hat Enterprise Linux Server 6 x86_64
• Red Hat Enterprise Linux Server 6 i386
• Red Hat Enterprise Linux Workstation 6 x86_64
• Red Hat Enterprise Linux Workstation 6 i386
• Red Hat Enterprise Linux Desktop 6 x86_64
• Red Hat Enterprise Linux Desktop 6 i386
• Red Hat Enterprise Linux for IBM z Systems 6 s390x
• Red Hat Enterprise Linux for Power, big endian 6 ppc64
• Red Hat Enterprise Linux for Scientific Computing 6 x86_64

Fixes

• BZ - 1761594 - CVE-2019-2949 OpenJDK: Improper handling of Kerberos proxy credentials (Kerberos, 8220302)
• BZ - 1791217 - CVE-2020-2654 OpenJDK: Excessive memory usage in OID processing in X.509 certificate parsing (Libraries, 8234037)
• BZ - 1823199 - CVE-2020-2754 OpenJDK: Misplaced regular expression syntax error check in RegExpScanner (Scripting, 8223898)
• BZ - 1823200 - CVE-2020-2755 OpenJDK: Incorrect handling of empty string nodes in regular expression Parser (Scripting, 8223904)
• BZ - 1823215 - CVE-2020-2756 OpenJDK: Incorrect handling of references to uninitialized class descriptors during deserialization (Serialization, 8224541)
• BZ - 1823216 - CVE-2020-2757 OpenJDK: Uncaught InstantiationError exception in ObjectStreamClass (Serialization, 8224549)
• BZ - 1823527 - CVE-2020-2800 OpenJDK: CRLF injection into HTTP headers in HttpServer (Lightweight HTTP Server, 8234825)
• BZ - 1823542 - CVE-2020-2830 OpenJDK: Regular expression DoS in Scanner (Concurrency, 8236201)
• BZ - 1823694 - CVE-2020-2803 OpenJDK: Incorrect bounds checks in NIO Buffers (Libraries, 8234841)
• BZ - 1823844 - CVE-2020-2805 OpenJDK: Incorrect type checks in MethodType.readObject() (Libraries, 8235274)
• BZ - 1823960 - CVE-2020-2781 OpenJDK: Re-use of single TLS session for new connections (JSSE, 8234408)

CVEs

• CVE-2019-2949
• CVE-2020-2654
• CVE-2020-2754
• CVE-2020-2755
• CVE-2020-2756
• CVE-2020-2757
• CVE-2020-2781
• CVE-2020-2800
• CVE-2020-2803
• CVE-2020-2805
• CVE-2020-2830

References

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