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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.3573 Potential directory traversal vulnerability in WebSphere Application Server (CVE-2018-1797) 15 November 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: IBM WebSphere Application Server Publisher: IBM Operating System: AIX HP-UX IBM i Linux variants Solaris Windows z/OS Impact/Access: Create Arbitrary Files -- Remote with User Interaction Resolution: Patch/Upgrade CVE Names: CVE-2018-1797 Original Bulletin: https://www.ibm.com/support/docview.wss?uid=ibm10730699 - --------------------------BEGIN INCLUDED TEXT-------------------- Security Bulletin: Potential directory traversal vulnerability in WebSphere Application Server (CVE-2018-1797) Security Bulletin Document information Software version: 7.0, 8.0, 8.5, 9.0 Operating system(s): AIX, HP-UX, IBM i, Linux, Solaris, Windows, z/OS Software edition: Advanced, Base, Developer, Enterprise, Express, Network Deployment, Single Server Reference #: 0730699 Modified date: 14 November 2018 Summary There is a potential directory traversal vulnerability in WebSphere Application Server (CVE-2018-1797). This is occurs when an Enterprise Bundle Archive (EBA) is installed into the Application Server that has a path external to the EBA. Vulnerability Details CVEID: CVE-2018-1797 DESCRIPTION: IBM WebSphere Application Server using Enterprise bundle Archives (EBA) could allow a local attacker to traverse directories on the system. By persuading a victim to extract a specially-crafted ZIP archive containing "dot dot slash" sequences (../), an attacker could exploit this vulnerability to write to arbitrary files on the system. Note: This vulnerability is known as "Zip-Slip". CVSS Base Score: 6.3 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/ 149427 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N) Affected Products and Versions This vulnerability affects the following versions and releases of IBM WebSphere Application Server: * Version 9.0 * Version 8.5 * Version 8.0 * Version 7.0 Feature Pack for OSGi Applications and Java Persistence API Remediation/Fixes The recommended solution is to apply the interim fix, Fix Pack or PTF containing the APAR for each named product as soon as practical. For WebSphere Application Server traditional and WebSphere Application Server Hypervisor Edition: For V9.0.0.0 through 9.0.0.9: - - Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PH02031 - --OR-- - - Apply Fix Pack 9.0.0.10 or later (targeted availability 4Q 2018). For V8.5.0.0 through 8.5.5.14: - - Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PH02031 - --OR-- - - Apply Fix Pack 8.5.5.15 or later (targeted availability 1Q 2019). For V8.0.0.0 through 8.0.0.15: - - Upgrade to a minimal fix pack levels as required by interim fix and then apply Interim Fix PH02031 For WebSphere Application Server V7 Feature Pack for OSGi Applications and Java Persistence API 2.0: - - Call IBM Support for the interim fix. WebSphere Application Server V7 and V8 are no longer in full support; IBM recommends upgrading to a fixed, supported version/release/platform of the product. Change History 14 November 2018: original document published - --------------------------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 iQIVAwUBW+y9XGaOgq3Tt24GAQgMlg/9GkJ3Dz6AUqz2z6PTzKpBjubqTsvYSFpf VPRKWgyaS7iVnSUKm6pYsPD6h+Vhc+IGPO4oVai2V9fJveze2AGR4HR8DJ3mX3Jo cPFsuNYXolV75RQ9pQeqbNss++v48ZkmtxCsPZ5QGf1pXwemeU/4q//PQyZBhlxB F6qIunS+fNLg1TM3Fms1x+XZXEQlQIiK+Q70LlsUETJGrCw09JyPXzIg6dioVWAw b923MWSQSf2+4IN5dOLY8Ry2sRxfWTcDbSodRhZEhXYj7GSmvLxI97RVQ+Or7zK3 9famRkCarwWAJD0K2WSe3fX4ZnS3jIlt3RRsUhxLGWuuDCZa2SfwBotgus2cd5U6 WSz2kSNdydx9ylhlXicDGsnZfged1r6IDurz4FN1DaFrYHLUKFlVzyKl+YH/jHdh ZqW1HWNyEseiyFsrD129F2Tl/wxJWOTAONNZY+CjuBL8fX+gz0tApvNgdbRpXgvW XQw9acdSwdTBuKB4iE7SMzDaqDdQ4MXDdoEFqKfcERixX1r8oEtCOyj6jlZg9ODa J58EQRPEnVg4LFsi8NFcH0y0vGWkilcMrvz5u2i0/RQmjo9xjKp7dIJsn9CdpQbD t9zRLEQ4MW+Vs9n6RJKDGn+cCELzaZMPEFVFysi+IpR+L1t1It3DM8YTMokdydwS daeXbjYyrB4= =+fRm -----END PGP SIGNATURE-----