1. Ubuntu Security Notices
  2. USN-4607-2

USN-4607-2: OpenJDK regressions

Publication date

12 November 2020

Overview

USN-4607-1 introduced a regression in OpenJDK.

Releases

Packages

Details

USN-4607-1 fixed vulnerabilities and added features in OpenJDK.
Unfortunately, that update introduced a regression that could cause TLS
connections with client certificate authentication to fail in some
situations. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

It was discovered that OpenJDK incorrectly handled deserializing Proxy
class objects with many interfaces. A remote attacker could possibly use
this issue to cause a denial of service (memory consumption) via a
specially crafted input. (CVE-2020-14779)

Sergey Ostanin discovered that OpenJDK incorrectly restricted
authentication mechanisms. A remote attacker could possibly use this
issue to obtain sensitive information over an unencrypted connection.
(CVE-2020-14781)

It was discovered that OpenJDK incorrectly handled...

USN-4607-1 fixed vulnerabilities and added features in OpenJDK.
Unfortunately, that update introduced a regression that could cause TLS
connections with client certificate authentication to fail in some
situations. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

It was discovered that OpenJDK incorrectly handled deserializing Proxy
class objects with many interfaces. A remote attacker could possibly use
this issue to cause a denial of service (memory consumption) via a
specially crafted input. (CVE-2020-14779)

Sergey Ostanin discovered that OpenJDK incorrectly restricted
authentication mechanisms. A remote attacker could possibly use this
issue to obtain sensitive information over an unencrypted connection.
(CVE-2020-14781)

It was discovered that OpenJDK incorrectly handled untrusted certificates.
An attacker could possibly use this issue to read or write sensitive
information. (CVE-2020-14782)

Zhiqiang Zang discovered that OpenJDK incorrectly checked for integer
overflows. An attacker could possibly use this issue to bypass certain
Java sandbox restrictions. (CVE-2020-14792)

Markus Loewe discovered that OpenJDK incorrectly checked permissions when
converting a file system path to an URI. An attacker could possibly use
this issue to bypass certain Java sandbox restrictions. (CVE-2020-14796)

Markus Loewe discovered that OpenJDK incorrectly checked for invalid
characters when converting an URI to a path. An attacker could possibly
use this issue to read or write sensitive information. (CVE-2020-14797)

Markus Loewe discovered that OpenJDK incorrectly checked the length of
input strings. An attacker could possibly use this issue to bypass certain
Java sandbox restrictions. (CVE-2020-14798)

It was discovered that OpenJDK incorrectly handled boundary checks. An
attacker could possibly use this issue to bypass certain Java sandbox
restrictions. (CVE-2020-14803)

Update instructions

This update uses a new upstream release, which includes additional bug fixes. After a standard system update you need to restart any Java applications or applets to make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
20.10 groovy openjdk-11-jdk –  11.0.9.1+1-0ubuntu1~20.10
openjdk-11-jre –  11.0.9.1+1-0ubuntu1~20.10
openjdk-11-jre-headless –  11.0.9.1+1-0ubuntu1~20.10
openjdk-11-jre-zero –  11.0.9.1+1-0ubuntu1~20.10
openjdk-8-jdk –  8u275-b01-0ubuntu1~20.10
openjdk-8-jre –  8u275-b01-0ubuntu1~20.10
openjdk-8-jre-headless –  8u275-b01-0ubuntu1~20.10
openjdk-8-jre-zero –  8u275-b01-0ubuntu1~20.10
20.04 focal openjdk-11-jdk –  11.0.9.1+1-0ubuntu1~20.04
openjdk-11-jre –  11.0.9.1+1-0ubuntu1~20.04
openjdk-11-jre-headless –  11.0.9.1+1-0ubuntu1~20.04
openjdk-11-jre-zero –  11.0.9.1+1-0ubuntu1~20.04
openjdk-8-jdk –  8u275-b01-0ubuntu1~20.04
openjdk-8-jre –  8u275-b01-0ubuntu1~20.04
openjdk-8-jre-headless –  8u275-b01-0ubuntu1~20.04
openjdk-8-jre-zero –  8u275-b01-0ubuntu1~20.04
18.04 bionic openjdk-11-jdk –  11.0.9.1+1-0ubuntu1~18.04
openjdk-11-jre –  11.0.9.1+1-0ubuntu1~18.04
openjdk-11-jre-headless –  11.0.9.1+1-0ubuntu1~18.04
openjdk-11-jre-zero –  11.0.9.1+1-0ubuntu1~18.04
openjdk-8-jdk –  8u275-b01-0ubuntu1~18.04
openjdk-8-jre –  8u275-b01-0ubuntu1~18.04
openjdk-8-jre-headless –  8u275-b01-0ubuntu1~18.04
openjdk-8-jre-zero –  8u275-b01-0ubuntu1~18.04
16.04 xenial openjdk-8-jdk –  8u275-b01-0ubuntu1~16.04
openjdk-8-jre –  8u275-b01-0ubuntu1~16.04
openjdk-8-jre-headless –  8u275-b01-0ubuntu1~16.04
openjdk-8-jre-zero –  8u275-b01-0ubuntu1~16.04

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References

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