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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.2871 USN-4080-1: OpenJDK 8 vulnerabilities 31 July 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: openjdk-8 Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Modify Arbitrary Files -- Remote with User Interaction Denial of Service -- Remote/Unauthenticated Access Confidential Data -- Remote with User Interaction Resolution: Patch/Upgrade CVE Names: CVE-2019-7317 CVE-2019-2842 CVE-2019-2816 CVE-2019-2786 CVE-2019-2769 CVE-2019-2762 CVE-2019-2745 Reference: ASB-2019.0212 ESB-2019.2852 ESB-2019.2705 ESB-2019.1491 Original Bulletin: https://usn.ubuntu.com/4080-1/ - --------------------------BEGIN INCLUDED TEXT-------------------- USN-4080-1: OpenJDK 8 vulnerabilities 31 July 2019 openjdk-8 vulnerabilities A security issue affects these releases of Ubuntu and its derivatives: o Ubuntu 16.04 LTS Summary Several security issues were fixed in OpenJDK. Software Description o openjdk-8 - Open Source Java implementation Details Keegan Ryan discovered that the ECC implementation in OpenJDK was not sufficiently resilient to side-channel attacks. An attacker could possibly use this to expose sensitive information. (CVE-2019-2745) It was discovered that OpenJDK did not sufficiently validate serial streams before deserializing suppressed exceptions in some situations. An attacker could use this to specially craft an object that, when deserialized, would cause a denial of service. (CVE-2019-2762) It was discovered that in some situations OpenJDK did not properly bound the amount of memory allocated during object deserialization. An attacker could use this to specially craft an object that, when deserialized, would cause a denial of service (excessive memory consumption). (CVE-2019-2769) It was discovered that OpenJDK did not properly restrict privileges in certain situations. An attacker could use this to specially construct an untrusted Java application or applet that could escape sandbox restrictions. (CVE-2019-2786) Jonathan Birch discovered that the Networking component of OpenJDK did not properly validate URLs in some situations. An attacker could use this to bypass restrictions on characters in URLs. (CVE-2019-2816) Nati Nimni discovered that the Java Cryptography Extension component in OpenJDK did not properly perform array bounds checking in some situations. An attacker could use this to cause a denial of service. (CVE-2019-2842) It was discovered that OpenJDK incorrectly handled certain memory operations. If a user or automated system were tricked into opening a specially crafted PNG file, a remote attacker could use this issue to cause OpenJDK to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2019-7317) Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 16.04 LTS openjdk-8-jdk - 8u222-b10-1ubuntu1~16.04.1 openjdk-8-jdk-headless - 8u222-b10-1ubuntu1~16.04.1 openjdk-8-jre - 8u222-b10-1ubuntu1~16.04.1 openjdk-8-jre-headless - 8u222-b10-1ubuntu1~16.04.1 openjdk-8-jre-jamvm - 8u222-b10-1ubuntu1~16.04.1 openjdk-8-jre-zero - 8u222-b10-1ubuntu1~16.04.1 To update your system, please follow these instructions: https:// wiki.ubuntu.com/Security/Upgrades . 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 o CVE-2019-2745 o CVE-2019-2762 o CVE-2019-2769 o CVE-2019-2786 o CVE-2019-2816 o CVE-2019-2842 o CVE-2019-7317 - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. 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On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBXUE84GaOgq3Tt24GAQjJkw//cb4dzyALn8k/tj9ez+3yCRgCu6FZy1+F ZKFVBTrb1GWH/0RSyvIzCl5XjH2b10yfBgXGNEIaUNvB057D0MFt4KeR+HlRVooN kUDAjfDLog5cNGD1fPPUFEeum+67Fdv8YvVXMF52cYD2cABTiWqUblxPfcef3z7P EsmZMKxaLOreZDd814ysNlMZfvqqIlDlu8B2rOimbeczBMym/KL60w2vFuX614No mU5eP8qxDrLMlCyc+trHoOxtVMJyGTl9qlk9KXAN8H4BJXNpeYg6K6m8vekz7VEv PgXxgLM8a+NgqqayQqSIcUKsZFE5p+QQRJ4no+bEE+UqwDGy/OpiXNUFJB3gSPIp sbxZvtscuKe7J8w1rR1yGSR4FZpUunkGJdbJPUQv0bJMhXWTcdSYCdB78zL9mqrK wLUiy981vNnzByU5d2H3ywA8XmA5Eocy0160BRjdOf3WvlqgWB4kCGJDER+e4HaY bYb7zl4qlvu//X38dHIhe6M0rU59Kbt/f15+7e5zIFOrLxifZxui3oEEJk3BiDCI U+Nr0Cai7EWGd/fMtdmRQ7lHCGLmSrjLsGwkm6rDn0QQxOOmksEyRddX81h/jtnH cW6a10+mD8Hb/FYeg92/L45Y0+IRZ067Eo8bJ9YsI8/cFs67cWoHngkKIy8BLtEk jZhqayyhVeU= =IVQo -----END PGP SIGNATURE-----