Linux Security
Linux Security
Linux Security

Ubuntu 4607-1: OpenJDK vulnerabilities

Date 27 Oct 2020
270
Posted By LinuxSecurity Advisories
Several security issues were fixed in OpenJDK.
==========================================================================
Ubuntu Security Notice USN-4607-1
October 27, 2020

openjdk-8, openjdk-lts vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 20.10
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

Several security issues were fixed in OpenJDK.

Software Description:
- 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 LTS:
  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 LTS:
  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 LTS:
  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.

References:
  https://usn.ubuntu.com/4607-1
  CVE-2020-14779, CVE-2020-14781, CVE-2020-14782, CVE-2020-14792,
  CVE-2020-14796, CVE-2020-14797, CVE-2020-14798, CVE-2020-14803

Package Information:
  https://launchpad.net/ubuntu/+source/openjdk-8/8u272-b10-0ubuntu1~20.10
  https://launchpad.net/ubuntu/+source/openjdk-lts/11.0.9+11-0ubuntu1
  https://launchpad.net/ubuntu/+source/openjdk-8/8u272-b10-0ubuntu1~20.04
  https://launchpad.net/ubuntu/+source/openjdk-lts/11.0.9+11-0ubuntu1~20.04
  https://launchpad.net/ubuntu/+source/openjdk-8/8u272-b10-0ubuntu1~18.04
  https://launchpad.net/ubuntu/+source/openjdk-lts/11.0.9+11-0ubuntu1~18.04.1
  https://launchpad.net/ubuntu/+source/openjdk-8/8u272-b10-0ubuntu1~16.04

Advisories

LinuxSecurity Poll

How frequently do you patch/update your system?

No answer selected. Please try again.
Please select either existing option or enter your own, however not both.
Please select minimum 0 answer(s) and maximum 3 answer(s).
/main-polls/52-how-frequently-do-you-patch-update-your-system?task=poll.vote&format=json
52
radio
[{"id":"179","title":"As soon as patches\/updates are released - I track advisories for my distro(s) diligently","votes":"47","type":"x","order":"1","pct":79.66,"resources":[]},{"id":"180","title":"Every so often, when I think of it","votes":"7","type":"x","order":"2","pct":11.86,"resources":[]},{"id":"181","title":"Hardly ever","votes":"5","type":"x","order":"3","pct":8.47,"resources":[]}] ["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"] ["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"] 350

Please vote first in order to view vote results.

VOTE ON THE POLL PAGE


VIEW MORE POLLS

bottom 200

Please enable / Bitte aktiviere JavaScript!
Veuillez activer / Por favor activa el Javascript![ ? ]

We use cookies to provide and improve our services. By using our site, you consent to our Cookie Policy.