ESB-2026.5862

=========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2026.5862 USN-8332-1: CRaC JDK 17 vulnerabilities 29 May 2026 =========================================================================== AUSCERT Security Bulletin Summary --------------------------------- Product: CRaC JDK 17 Publisher: Ubuntu Operating System: Ubuntu Resolution: Patch/Upgrade CVE Names: CVE-2026-23865 CVE-2026-22016 CVE-2026-34282 CVE-2026-22021 CVE-2026-22013 CVE-2026-22018 CVE-2026-22007 CVE-2026-34268 Original Bulletin: https://ubuntu.com/security/notices/USN-8332-1 Comment: CVSS (Max): 7.5 CVE-2026-34282 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) CVSS Source: [Oracle], Ubuntu Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H EPSS (Max): 0.2% (35th) CVE-2026-22016 2026-05-28 - --------------------------BEGIN INCLUDED TEXT-------------------- USN-8332-1: CRaC JDK 17 vulnerabilities Publication date 28 May 2026 Overview Several security issues were fixed in CRaC JDK 17. Releases 26.04 LTS 25.10 --------------------------------------------------------------------------------- Open side navigation Packages o openjdk-17-crac - Open Source Java implementation with Coordinated Restore at Checkpoints Details Thomas Beckers discovered that the JAXP component of CRaC JDK 17 did not correctly authenticate certain APIs. A remote unauthenticated attacker could possibly use this issue to gain unauthorized access to sensitive information. ( CVE-2026-22016 ) It was discovered that the Networking component of CRaC JDK 17 did not correctly authenticate certain APIs. A remote unauthenticated attacker could possibly use this issue to cause a denial of service. ( CVE-2026-34282 ) It was discovered that the JSSE component of CRaC JDK 17 did not correctly authenticate certain APIs. A remote unauthenticated attacker could possibly use this issue to cause a denial of service. ( CVE-2026-22021 ) It was discovered that the JGSS component of CRaC JDK 17 did not correctly authenticate certain APIs. A remote attacker could possibly use this issue to obtain sensitive information. ( CVE-2026-22013 ) It was discovered that the 2D component of CRaC JDK 17 did not correctly handle certain integer arithmetic. If a user or automated system were tricked into opening a specially crafted file, an attacker could possibly use this issue to leak sensitive information. ( CVE-2026-23865 ) It was discovered that the Libraries component of CRaC JDK 17 did not correctly authenticate certain APIs. A remote unauthenticated attacker could possibly use this issue to cause a denial of service. ( CVE-2026-22018 ) Ken Pyle discovered that the Security component of CRaC JDK 17 did not correctly authenticate certain APIs. A local attacker could possibly use this issue to leak sensitive information. ( CVE-2026-22007 , CVE-2026-34268 ) 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/2026-04-21 --------------------------------------------------------------------------------- Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu Release Package Version openjdk-17-crac-jdk - 17.0.19+10-0ubuntu1~26.04.1 openjdk-17-crac-jdk-headless - 17.0.19+10-0ubuntu1~26.04.1 26.04 LTS resolute openjdk-17-crac-jre - 17.0.19+10-0ubuntu1~26.04.1 openjdk-17-crac-jre-headless - 17.0.19+10-0ubuntu1~26.04.1 openjdk-17-crac-jre-zero - 17.0.19+10-0ubuntu1~26.04.1 openjdk-17-crac-jdk - 17.0.19+10-0ubuntu1~25.10.1 openjdk-17-crac-jdk-headless - 17.0.19+10-0ubuntu1~25.10.1 25.10 questing openjdk-17-crac-jre - 17.0.19+10-0ubuntu1~25.10.1 openjdk-17-crac-jre-headless - 17.0.19+10-0ubuntu1~25.10.1 openjdk-17-crac-jre-zero - 17.0.19+10-0ubuntu1~25.10.1 --------------------------------------------------------------------------------- References o CVE-2026-34282 o CVE-2026-34268 o CVE-2026-23865 o CVE-2026-22021 o CVE-2026-22018 o CVE-2026-22016 o CVE-2026-22013 o CVE-2026-22007 Related notices o USN-8334-1 o USN-8333-1 o USN-8331-1 o USN-8330-1 o USN-8086-1 - --------------------------END INCLUDED TEXT---------------------- You have received this e-mail bulletin as a result of your organisation's registration with AUSCERT. 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