Ubuntu alert USN-8003-1 (openjdk-21-crac)
| From: | noreply+usn-bot@canonical.com | |
| To: | ubuntu-security-announce@lists.ubuntu.com | |
| Subject: | [USN-8003-1] CRaC JDK 21 vulnerabilities | |
| Date: | Tue, 03 Feb 2026 03:34:25 +0000 | |
| Message-ID: | <E1vn7BJ-0004eB-JA@lists.ubuntu.com> |
========================================================================== Ubuntu Security Notice USN-8003-1 February 02, 2026 openjdk-21-crac vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 25.10 Summary: Several security issues were fixed in CRaC JDK 21. Software Description: - openjdk-21-crac: Open Source Java implementation with Coordinated Restore at Checkpoints Details: It was discovered that the RMI component of CRaC JDK 21 would establish RMI TCP endpoint connections to a remote host without setting an endpoint identification algorithm. An unauthenticated remote attacker could possibly use this issue to steal sensitive information. (CVE-2026-21925) Mingijung discovered that the AWT and JavaFX componenets of CRaC JDK 21 could run programs if Desktop.browse() was supplied a filename as a URI. An unauthenticated remote attacker could possibly use this issue to execute arbitrary code. (CVE-2026-21932) Zhihui Chen discovered that the Networking component of CRaC JDK 21 was suceptible to a CRLF injection vulnerability via the HttpServer class. An unauthenticated remote attacker could possibly use this issue to modify files or leak sensitive information. (CVE-2026-21933) Ireneusz Pastusiak discovered that the Security component of CRaC JDK 21 failed to verify provided URIs point to a legitimate source when AIA is enabled. An unauthenticated remote attacker could possibly use this issue to redirect users to malicious hosts. (CVE-2026-21945) In addition to security fixes, the updated packages contain bug fixes, new features, and possibly incompatible changes. Please see the following for more information: https://openjdk.org/groups/vulnerability/advisories/2026-... Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 25.10 openjdk-21-crac-demo 21.0.10+7-0ubuntu1~25.10 openjdk-21-crac-doc 21.0.10+7-0ubuntu1~25.10 openjdk-21-crac-jdk 21.0.10+7-0ubuntu1~25.10 openjdk-21-crac-jdk-headless 21.0.10+7-0ubuntu1~25.10 openjdk-21-crac-jre 21.0.10+7-0ubuntu1~25.10 openjdk-21-crac-jre-headless 21.0.10+7-0ubuntu1~25.10 openjdk-21-crac-jre-zero 21.0.10+7-0ubuntu1~25.10 openjdk-21-crac-source 21.0.10+7-0ubuntu1~25.10 openjdk-21-crac-testsupport 21.0.10+7-0ubuntu1~25.10 This update uses a new upstream release, which includes additional bug fixes. After a standard system update you need to restart Java applications to make all the necessary changes. References: https://ubuntu.com/security/notices/USN-8003-1 CVE-2026-21925, CVE-2026-21932, CVE-2026-21933, CVE-2026-21945 Package Information: https://launchpad.net/ubuntu/+source/openjdk-21-crac/21.0...
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