RHSA-2020:4307 - Security Advisory

Topic

An update for java-11-openjdk is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Moderate. 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-11-openjdk packages provide the OpenJDK 11 Java Runtime Environment and the OpenJDK 11 Java Software Development Kit.

Security Fix(es):

• OpenJDK: Credentials sent over unencrypted LDAP connection (JNDI, 8237990) (CVE-2020-14781)
• OpenJDK: Certificate blacklist bypass via alternate certificate encodings (Libraries, 8237995) (CVE-2020-14782)
• OpenJDK: Integer overflow leading to out-of-bounds access (Hotspot, 8241114) (CVE-2020-14792)
• OpenJDK: Incomplete check for invalid characters in URI to path conversion (Libraries, 8242685) (CVE-2020-14797)
• OpenJDK: Race condition in NIO Buffer boundary checks (Libraries, 8244136) (CVE-2020-14803)
• OpenJDK: High memory usage during deserialization of Proxy class with many interfaces (Serialization, 8236862) (CVE-2020-14779)
• OpenJDK: Missing permission check in path to URI conversion (Libraries, 8242680) (CVE-2020-14796)

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 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 Workstation 7 x86_64
• Red Hat Enterprise Linux Desktop 7 x86_64
• Red Hat Enterprise Linux for IBM z Systems 7 s390x
• Red Hat Enterprise Linux for Power, big endian 7 ppc64
• Red Hat Enterprise Linux for Scientific Computing 7 x86_64
• Red Hat Enterprise Linux for Power, little endian 7 ppc64le

Fixes

• BZ - 1889271 - CVE-2020-14779 OpenJDK: High memory usage during deserialization of Proxy class with many interfaces (Serialization, 8236862)
• BZ - 1889274 - CVE-2020-14781 OpenJDK: Credentials sent over unencrypted LDAP connection (JNDI, 8237990)
• BZ - 1889280 - CVE-2020-14792 OpenJDK: Integer overflow leading to out-of-bounds access (Hotspot, 8241114)
• BZ - 1889290 - CVE-2020-14782 OpenJDK: Certificate blacklist bypass via alternate certificate encodings (Libraries, 8237995)
• BZ - 1889697 - CVE-2020-14796 OpenJDK: Missing permission check in path to URI conversion (Libraries, 8242680)
• BZ - 1889717 - CVE-2020-14797 OpenJDK: Incomplete check for invalid characters in URI to path conversion (Libraries, 8242685)
• BZ - 1889895 - CVE-2020-14803 OpenJDK: Race condition in NIO Buffer boundary checks (Libraries, 8244136)

CVEs

• CVE-2020-14779
• CVE-2020-14781
• CVE-2020-14782
• CVE-2020-14792
• CVE-2020-14796
• CVE-2020-14797
• CVE-2020-14803

References

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