Ubuntu 22.04 LTS: USN-5388-2 Critical: OpenJDK Denial of Service

ubuntu

April 26, 2022

Several security issues were fixed in OpenJDK.

Summary

Several security issues were fixed in OpenJDK.

Software Description:

- openjdk-17: Open Source Java implementation

Details:

It was discovered that OpenJDK incorrectly verified ECDSA signatures. An

attacker could use this issue to bypass the signature verification process.

(CVE-2022-21449)

It was discovered that OpenJDK incorrectly limited memory when compiling a

specially crafted XPath expression. An attacker could possibly use this

issue to cause a denial of service. (CVE-2022-21426)

It was discovered that OpenJDK incorrectly handled converting certain

object arguments into their textual representations. An attacker could

possibly use this issue to cause a denial of service. (CVE-2022-21434)

It was discovered that OpenJDK incorrectly validated the encoded length of

certain object identifiers. An attacker could possibly use this issue to

cause a denial of service. (CVE-2022-21443)

It was discovered that OpenJDK incorrectly validated certain paths. An

...

Read the Full Advisory

Topics Covered

security advisory denial of service critical Ubuntu Java update signature verification OpenJDK

Update Instructions

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

Ubuntu 22.04 LTS:
  openjdk-17-jdk                  17.0.3+7-0ubuntu0.22.04.1
  openjdk-17-jdk-headless         17.0.3+7-0ubuntu0.22.04.1
  openjdk-17-jre                  17.0.3+7-0ubuntu0.22.04.1
  openjdk-17-jre-headless         17.0.3+7-0ubuntu0.22.04.1
  openjdk-17-jre-zero             17.0.3+7-0ubuntu0.22.04.1

Ubuntu 21.10:
  openjdk-17-jdk                  17.0.3+7-0ubuntu0.21.10.1
  openjdk-17-jdk-headless         17.0.3+7-0ubuntu0.21.10.1
  openjdk-17-jre                  17.0.3+7-0ubuntu0.21.10.1
  openjdk-17-jre-headless         17.0.3+7-0ubuntu0.21.10.1
  openjdk-17-jre-zero             17.0.3+7-0ubuntu0.21.10.1

Ubuntu 20.04 LTS:
  openjdk-17-jdk                  17.0.3+7-0ubuntu0.20.04.1
  openjdk-17-jdk-headless         17.0.3+7-0ubuntu0.20.04.1
  openjdk-17-jre                  17.0.3+7-0ubuntu0.20.04.1
  openjdk-17-jre-headless         17.0.3+7-0ubuntu0.20.04.1
  openjdk-17-jre-zero             17.0.3+7-0ubuntu0.20.04.1

Ubuntu 18.04 LTS:
  openjdk-17-jdk                  17.0.3+7-0ubuntu0.18.04.1
  openjdk-17-jdk-headless         17.0.3+7-0ubuntu0.18.04.1
  openjdk-17-jre                  17.0.3+7-0ubuntu0.18.04.1
  openjdk-17-jre-headless         17.0.3+7-0ubuntu0.18.04.1
  openjdk-17-jre-zero             17.0.3+7-0ubuntu0.18.04.1

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.