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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.3798 Multiple vulnerabilities in IBM HTTP Server affect IBM Security Access Manager for Enterprise Single Sign-On 10 October 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: IBM Security Access Manager for Enterprise Publisher: IBM Operating System: AIX HP-UX Linux variants Windows Impact/Access: Denial of Service -- Remote/Unauthenticated Cross-site Scripting -- Remote with User Interaction Provide Misleading Information -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2019-10098 CVE-2019-10092 CVE-2018-20843 Reference: ESB-2019.3557 ESB-2019.3525 ESB-2019.3408 - --------------------------BEGIN INCLUDED TEXT-------------------- Security Bulletin: Multiple vulnerabilities in IBM HTTP Server affect IBM Security Access Manager for Enterprise Single Sign-On Security Bulletin Summary These issues were also addressed by IBM WebSphere Application Server shipped with IBM Security Access Manager for Enterprise Single Sign-On. Vulnerability Details CVEID: CVE-2018-20843 DESCRIPTION: libexpat is vulnerable to a denial of service, caused by an error in the XML parser. By persuading a victim to open a specially-crafted file, a remote attacker could exploit this vulnerability to consume all available CPU resources. CVSS Base Score: 3.3 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/163073 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L) CVEID: CVE-2019-10092 DESCRIPTION: Apache HTTP Server is vulnerable to cross-site scripting, caused by improper validation of user-supplied input by the mod_proxy error page. A remote attacker could cause the link on the error page to be malfomed and instead point to a page of their choice. An attacker could use this vulnerability to steal the victim''s cookie-based authentication credentials. CVSS Base Score: 4.7 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/165367 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N) CVEID: [23]CVE-2019-10098 DESCRIPTION: Apache HTTP Server could allow a remote attacker to conduct phishing attacks, caused by an open redirect vulnerability in the mod_rewrite module. An attacker could exploit this vulnerability using a specially-crafted URL to redirect a victim to arbitrary Web sites. CVSS Base Score: 3.7 CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/165366 for the current score CVSS Environmental Score*: Undefined CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N) Affected Products and Versions IBM Security Access Manager for Enterprise Single Sign-On 8.2.1, 8.2.2 Remediation/Fixes Refer to the following security bulletins for vulnerability details and information about fixes addressed by IBM WebSphere Application Server which is shipped with IBM Security Access Manager for Enterprise Single Sign-On. +------------------------------------------------------------------------+ |Principal Product and|Affected Supporting| Affected Supporting Product | | Version(s) |Product and Version| Security Bulletin | |---------------------+-------------------+------------------------------| |IBM Security Access |IBM WebSphere |[1]Security Bulletin: | |Manager for |Application Server |Multiple vulnerabilities in | |Enterprise Single |8.5 |IBM HTTP Server used by | |Sign-On 8.2.1 | |WebSphere Application Server | |---------------------+-------------------+------------------------------| |IBM Security Access |IBM WebSphere |[1]Security Bulletin: | |Manager for |Application Server |Multiple vulnerabilities in | |Enterprise Single |8.5 |IBM HTTP Server used by | |Sign-On 8.2.2 | |WebSphere Application Server | +------------------------------------------------------------------------+ [1] https://www.ibm.com/support/pages/node/964768 Workarounds and Mitigations None *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: 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). 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