USN-4607-1: OpenJDK vulnerabilities
27 October 2020
Several security issues were fixed in OpenJDK.
Releases
Packages
- openjdk-8 - Open Source Java implementation
- openjdk-lts - Open Source Java implementation
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
The problem can be corrected by updating your system to the following package versions:
Ubuntu 20.10
-
openjdk-11-jdk
-
11.0.9+11-0ubuntu1
-
openjdk-11-jre
-
11.0.9+11-0ubuntu1
-
openjdk-11-jre-headless
-
11.0.9+11-0ubuntu1
-
openjdk-11-jre-zero
-
11.0.9+11-0ubuntu1
-
openjdk-8-jdk
-
8u272-b10-0ubuntu1~20.10
-
openjdk-8-jre
-
8u272-b10-0ubuntu1~20.10
-
openjdk-8-jre-headless
-
8u272-b10-0ubuntu1~20.10
-
openjdk-8-jre-zero
-
8u272-b10-0ubuntu1~20.10
Ubuntu 20.04
-
openjdk-11-jdk
-
11.0.9+11-0ubuntu1~20.04
-
openjdk-11-jre
-
11.0.9+11-0ubuntu1~20.04
-
openjdk-11-jre-headless
-
11.0.9+11-0ubuntu1~20.04
-
openjdk-11-jre-zero
-
11.0.9+11-0ubuntu1~20.04
-
openjdk-8-jdk
-
8u272-b10-0ubuntu1~20.04
-
openjdk-8-jre
-
8u272-b10-0ubuntu1~20.04
-
openjdk-8-jre-headless
-
8u272-b10-0ubuntu1~20.04
-
openjdk-8-jre-zero
-
8u272-b10-0ubuntu1~20.04
Ubuntu 18.04
-
openjdk-11-jdk
-
11.0.9+11-0ubuntu1~18.04.1
-
openjdk-11-jre
-
11.0.9+11-0ubuntu1~18.04.1
-
openjdk-11-jre-headless
-
11.0.9+11-0ubuntu1~18.04.1
-
openjdk-11-jre-zero
-
11.0.9+11-0ubuntu1~18.04.1
-
openjdk-8-jdk
-
8u272-b10-0ubuntu1~18.04
-
openjdk-8-jre
-
8u272-b10-0ubuntu1~18.04
-
openjdk-8-jre-headless
-
8u272-b10-0ubuntu1~18.04
-
openjdk-8-jre-zero
-
8u272-b10-0ubuntu1~18.04
Ubuntu 16.04
-
openjdk-8-jdk
-
8u272-b10-0ubuntu1~16.04
-
openjdk-8-jre
-
8u272-b10-0ubuntu1~16.04
-
openjdk-8-jre-headless
-
8u272-b10-0ubuntu1~16.04
-
openjdk-8-jre-zero
-
8u272-b10-0ubuntu1~16.04
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.