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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2015.2295 Security Bulletin: HTTP Request smuggling vulnerability may affect IBM HTTP Server (CVE-2015-3183) 2 September 2015 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: IBM HTTP Server Publisher: IBM Operating System: AIX HP-UX Linux variants Solaris Windows Impact/Access: Provide Misleading Information -- Remote with User Interaction Resolution: Patch/Upgrade CVE Names: CVE-2015-3183 Reference: ASB-2015.0086 ESB-2015.2216 ESB-2015.2215 ESB-2015.2154 ESB-2015.2113 ESB-2015.2004 ESB-2015.1872 Original Bulletin: http://www-01.ibm.com/support/docview.wss?uid=swg21963361 - --------------------------BEGIN INCLUDED TEXT-------------------- Security Bulletin: HTTP Request smuggling vulnerability may affect IBM HTTP Server (CVE-2015-3183) Document information More support for: IBM HTTP Server Software version: 6.1, 7.0, 8.0, 8.5, 8.5.5 Operating system(s): AIX, HP-UX, Linux, Solaris, Windows Reference #: 1963361 Modified date: 2015-09-01 Security Bulletin Summary Request smuggling vulnerability may affect the IBM HTTP Server used by IBM WebSphere Application Server Vulnerability Details CVEID: CVE-2015-3183 DESCRIPTION: Apache HTTP Server is vulnerable to HTTP request smuggling, caused by a chunk header parsing flaw in the apr_brigade_flatten() function. By sending a specially-crafted request in a malformed chunked header to the Apache HTTP server, an attacker could exploit this vulnerability to poison the web cache, bypass web application firewall protection, and conduct XSS attacks. CVSS Base Score: 6.1 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/104844 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N) Affected Products and Versions This vulnerability affects all versions and releases of IBM HTTP Server (powered by Apache) component in all editions of WebSphere Application Server and bundling products. Version 8.5.5 Version 8.5 Version 7.0 Version 6.1 Remediation/Fixes The recommended solutions is to apply the interim fix, Fix Pack or PTF containing APAR PI42928 for each named product as soon as practical. For affected IBM HTTP Server for WebSphere Application Server: For V8.5.0.0 through 8.5.5.6 Full Profile: * Upgrade to a minimum of Fix Pack 8.5.5.6 or later then apply Interim Fix PI42928 - --OR-- * Apply Fix Pack 8.5.5.7 or later (targeted availability 11 September 2015). For V8.0 through 8.0.0.11: * Upgrade to a minimum of Fix Pack 8.0.0.11 or later and then apply Interim Fix PI42928 - --OR-- * Apply Fix Pack 8.0.0.12 or later (targeted availability 18 January 2016). For V7.0.0.0 through 7.0.0.37: * Upgrade to a minimum of Fix Pack 7.0.0.37 or later and then apply Interim Fix PI42928 - --OR-- * Apply Fix Pack 7.0.0.39 or later (targeted availability 02 November 2015). For V6.1.0.0 through 6.1.0.47: * Upgrade to Fix Pack 6.1.0.47 and then apply cumulative Interim Fix PI45596 (this includes the fix for PI42928) For unsupported versions IBM recommends upgrading to a fixed, supported version 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. Important note IBM strongly suggests that all System z customers be subscribed to the System z Security Portal to receive the latest critical System z security and integrity service. If you are not subscribed, see the instructions on the System z Security web site. Security and integrity APARs and associated fixes will be posted to this portal. IBM suggests reviewing the CVSS scores and applying all security or integrity fixes as soon as possible to minimize any potential risk. References Complete CVSS v2 Guide On-line Calculator v2 Related information IBM Secure Engineering Web Portal IBM Product Security Incident Response Blog Change History 01 September 2015: original document published *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. - --------------------------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: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== 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). 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