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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2020.3199 Security Bulletin: WebSphere Application Server is vulnerable to an information exposure vulnerability (CVE-2020-4643) 18 September 2020 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: WebSphere Application Server Publisher: IBM Operating System: AIX HP-UX IBM i Linux variants Solaris Windows z/OS Impact/Access: Access Confidential Data -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2020-4643 Original Bulletin: https://www.ibm.com/support/pages/node/6334311 - --------------------------BEGIN INCLUDED TEXT-------------------- Security Bulletin: WebSphere Application Server is vulnerable to an information exposure vulnerability (CVE-2020-4643) Security Bulletin Summary WebSphere Application Server is vulnerable to an information exposure vulnerability. This has been addressed. More support for: WebSphere Application Server Software version: 7.0,8.0,8.5,9.0 Operating system(s): AIX, HP-UX, IBM i, Linux, Solaris, Windows, z/OS Document number: 6334311 Modified date: 17 September 2020 Vulnerability Details CVEID :  CVE-2020-4643 DESCRIPTION:  IBM WebSphere Application Server is vulnerable to an XML External Entity Injection (XXE) attack when processing XML data. A remote attacker could exploit this vulnerability to expose sensitive information. CVSS Base score: 7.5 CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/ 185590 for the current score. CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N) Affected Products and Versions +----------------------------+----------+ |Affected Product(s) |Version(s)| +----------------------------+----------+ |WebSphere Application Server|9.0 | +----------------------------+----------+ |WebSphere Application Server|8.5 | +----------------------------+----------+ |WebSphere Application Server|8.0 | +----------------------------+----------+ |WebSphere Application Server|7.0 | +----------------------------+----------+ Remediation/Fixes For WebSphere Application Server traditional and WebSphere Application Server Hypervisor Edition: For V9.0.0.0 through 9.0.5.5 · Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PH27509 - --OR-- · Apply Fix Pack 9.0.5.6 or later (targeted availability 4Q2020). For V8.5.0.0 through 8.5.5.17: · Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PH27509 - --OR-- · Apply Fix Pack 8.5.5.19 or later (targeted availability 1Q2021).  For V8.0.0.0 through 8.0.0.15: · Upgrade to 8.0.0.15 and then apply Interim Fix PH27509  For V7.0.0.0 through 7.0.0.45: · Upgrade to 7.0.0.45 and then apply Interim Fix PH27509  Additional interim fixes may be available and linked off the interim fix download page. WebSphere Application Server V7.0 and V8.0 are no longer in full support; IBM recommends upgrading to a fixed, supported version/release/platform of the product. Workarounds and Mitigations None Get Notified about Future Security Bulletins Subscribe to My Notifications to be notified of important product support alerts like this. References Complete CVSS v3 Guide On-line Calculator v3 Off Related Information IBM Secure Engineering Web Portal IBM Product Security Incident Response Blog Acknowledgement The vulnerability was reported to IBM by Kylinking Change History 17 Sept 2020: Initial Publication *The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin. Disclaimer According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY. Document Information Modified date: 17 September 2020 UID ibm16334311 - --------------------------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. 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. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== 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 iQIVAwUBX2Pk4eNLKJtyKPYoAQikiQ/7B/OFRl1SqE6YtQ3iOytzUCy1f0J/oFJ4 wF8maW2OyexcDS8tG1rrhzzH3mAVTOKcd7paCReCptfMhQZkz/1ED1OvtD9mk/3d RlKjvUTis1qgF6ozgvtwXEGHgn0+7M9+AF/Z/EWQfETpBCL784jM7bPoIBep7me4 dzwgN4F5k49GRYvZyoC7E3qVDy+kiyaZMQd5knwG+a/tsdgI0aKRPDevcd1xqk7m dMcEZUq44e6FBHhuOMflZTYn+gxcmSdTPN3Np1fY01S4fnXwT5qam98xUCRJ4w1t CGuUSJ4vkwCBZcQymGRl6AwmKJEEDMl+CFIgGhJS7h73Wvch/q61U7YfplTe8jmy ri5ro+yI2C9SOFHzc+UUg+6TyjVHePAQiK+GsG+ZsQ+tWQDymOZ9M1MkWx/sTSxd jJkLOptTCy5j1JH5fqW5ZAPbB//+gets29cZEaDZQ9vMCx/1gHHy27txgyCzMkkt ysArttn35z1nNTlPLxilWP+QFVMtbbblb75t459vdB/hR52TOdm12gtAXXz6eXOd NBszWUI9PZTQ04HxXwEKuvBfYfk1QNvRRWW371D+WMc1zJ65irtSFR+LLY6zdInA +g0LdOd8IHcYmN3PF0FxBxcXxpv3bJ9PZqyCbiaIWRanXHnvhkLNUyBSV+LKxDMe QWU+Db4nhQg= =KBMp -----END PGP SIGNATURE-----