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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT Security Bulletin ASB-2018.0169 Security Advisory: Oracle Java SE 18 July 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Oracle Java SE Operating System: Windows UNIX variants (UNIX, Linux, OSX) Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated Denial of Service -- Remote/Unauthenticated Access Confidential Data -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2018-2973 CVE-2018-2972 CVE-2018-2964 CVE-2018-2952 CVE-2018-2942 CVE-2018-2941 CVE-2018-2940 CVE-2018-2938 Member content until: Friday, August 17 2018 OVERVIEW Multiple vulnerabilities have been identified in Oracle Java SE, versions 6u191, 7u181, 8u172, 10.0.1 Oracle Java SE Embedded, version 8u171 Oracle JRockit, version R28.3.18 [1] IMPACT The vendor has provided the following information regarding the vulnerabilities: "This Critical Patch Update contains 8 new security fixes for Oracle Java SE. All of these vulnerabilities may be remotely exploitable without authentication, i.e., may be exploited over a network without requiring user credentials." [1] "CVE-2018-2938 9.0 AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H Supported versions that are affected are Java SE: 6u191, 7u181 and 8u172. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Java SE. While the vulnerability is in Java SE, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in takeover of Java SE. Note: This vulnerability can only be exploited by supplying data to APIs in the specified Component without using Untrusted Java Web Start applications or Untrusted Java applets, such as through a web service. CVE-2018-2964 8.3 AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H Supported versions that are affected are Java SE: 8u172 and 10.0.1. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Java SE. Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in Java SE, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in takeover of Java SE. Note: This vulnerability applies to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java applets, that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. This vulnerability does not apply to Java deployments, typically in servers, that load and run only trusted code (e.g., code installed by an administrator). CVE-2018-2941 8.3 AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H Supported versions that are affected are Java SE: 7u181, 8u172 and 10.0.1. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Java SE. Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in Java SE, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in takeover of Java SE. Note: This vulnerability applies to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java applets, that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. This vulnerability does not apply to Java deployments, typically in servers, that load and run only trusted code (e.g., code installed by an administrator). CVE-2018-2942 8.3 AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H Supported versions that are affected are Java SE: 7u181 and 8u172. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Java SE. Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in Java SE, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in takeover of Java SE. Note: Applies to client and server deployment of Java. This vulnerability can be exploited through sandboxed Java Web Start applications and sandboxed Java applets. It can also be exploited by supplying data to APIs in the specified Component without using sandboxed Java Web Start applications or sandboxed Java applets, such as through a web service. CVE-2018-2972 5.9 AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N The supported version that is affected is Java SE: 10.0.1. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Java SE. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Java SE accessible data. Note: Applies to client and server deployment of Java. This vulnerability can be exploited through sandboxed Java Web Start applications and sandboxed Java applets. It can also be exploited by supplying data to APIs in the specified Component without using sandboxed Java Web Start applications or sandboxed Java applets, such as through a web service. CVE-2018-2973 5.9 AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N Supported versions that are affected are Java SE: 6u191, 7u181, 8u172 and 10.0.1; Java SE Embedded: 8u171. Difficult to exploit vulnerability allows unauthenticated attacker with network access via SSL/TLS to compromise Java SE, Java SE Embedded. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Java SE, Java SE Embedded accessible data. Note: This vulnerability applies to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java applets, that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. This vulnerability does not apply to Java deployments, typically in servers, that load and run only trusted code (e.g., code installed by an administrator). CVE-2018-2940 4.3 AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N Supported versions that are affected are Java SE: 6u191, 7u181, 8u172 and 10.0.1; Java SE Embedded: 8u171. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Java SE, Java SE Embedded. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in unauthorized read access to a subset of Java SE, Java SE Embedded accessible data. Note: This vulnerability applies to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java applets, that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. This vulnerability does not apply to Java deployments, typically in servers, that load and run only trusted code (e.g., code installed by an administrator). CVE-2018-2952 3.7 AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L Supported versions that are affected are Java SE: 6u191, 7u181, 8u172 and 10.0.1; Java SE Embedded: 8u171; JRockit: R28.3.18. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Java SE, Java SE Embedded, JRockit. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Java SE, Java SE Embedded, JRockit. Note: Applies to client and server deployment of Java. This vulnerability can be exploited through sandboxed Java Web Start applications and sandboxed Java applets. It can also be exploited by supplying data to APIs in the specified Component without using sandboxed Java Web Start applications or sandboxed Java applets, such as through a web service." [2] MITIGATION Oracle states: "Due to the threat posed by a successful attack, Oracle strongly recommends that customers apply CPU fixes as soon as possible. Until you apply the CPU fixes, it may be possible to reduce the risk of successful attack by blocking network protocols required by an attack. For attacks that require certain privileges or access to certain packages, removing the privileges or the ability to access the packages from users that do not need the privileges may help reduce the risk of successful attack. Both approaches may break application functionality, so Oracle strongly recommends that customers test changes on non-production systems. Neither approach should be considered a long-term solution as neither corrects the underlying problem." [1] REFERENCES [1] Oracle Critical Patch Update Advisory - July 2018 http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html [2] Text Form of Oracle Critical Patch Update - July 2018 Risk Matrices http://www.oracle.com/technetwork/security-advisory/cpujul2018verbose-4258253.html AusCERT has made every effort to ensure that the information contained in this document is accurate. However, the decision to use the information described is the responsibility of each user or organisation. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBW07auGaOgq3Tt24GAQjE7w//cSvOP3BEcZcWzNp3WQzh4hlYZj/0RMLd yNyXY0/59xHELZdTamTVU9OYXsQy5HMzgNUZg9uaGCBx3vvxNOAs6w+3YLR58Dsf XCN5ZKVHRU9WAE+/B3RrUxNCP8sYJf06afNE8eepS8JuaVjd/aOc5GU76U3oiHLb uYwTHJxUPhDWgqWc9Sd98TbXDKF1Yv08Vv6ZNeD74MHlvyVoRlOgiw877M+HbWY2 HFFAxtwCHD68rSGKWooHdPgy6e2ZXjUryrEuRcuFFZ7tNeHHS/1oABd6vlatBYtA n+8lwidiUiBOmbymxSNvIKIReJHO2gn84jXZ2EKX3pucKr1MslP7ZiP1+5GpVseo vf4idVzPTvVnt5Guo/GP985yios5nFq6df9N1kdjcLxFzMqihSUjVhmR6zwJuqCU 4Jt9fBRL6Fsz5fJH2q9xxCGuyInP7STUrnuP2WUHMU7lLtJybsRa9PHxcKHXrGes R5OCO7m6YwB87MIMNubhzfSJsQboQPGqLAZskEBRDeybw+PHKpaPRvsGPk3067T+ EVPZv6dszma6IUTqoX5ySeMvDBxk9lV8emLZRCFL7TFLEnxCY1w6UqZOB4Mxy8ho 1Fr/rv9JHryYwHIBl/yhtfc2QvuZyhZmiPnpbtprUVDWQUmYWiP94ZVuZKqUlyIR R/o+o2YCo6I= =AqLo -----END PGP SIGNATURE-----