Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2020.0612 Cisco AnyConnect Secure Mobility Client for Windows Uncontrolled Search Path Vulnerability 21 February 2020 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Cisco AnyConnect Secure Mobility Client Publisher: Cisco Systems Operating System: Windows Impact/Access: Create Arbitrary Files -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2020-3153 Original Bulletin: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ac-win-path-traverse-qO4HWBsj - --------------------------BEGIN INCLUDED TEXT-------------------- Cisco AnyConnect Secure Mobility Client for Windows Uncontrolled Search Path Vulnerability Priority: Medium Advisory ID: cisco-sa-ac-win-path-traverse-qO4HWBsj First Published: 2020 February 19 16:00 GMT Version 1.0: Final Workarounds: No workarounds availableCisco Bug IDs: CSCvs46327 CVE-2020-3153 CWE-427 CVSS Score: 6.5 AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N/E:X/RL:X/RC:X Summary o A vulnerability in the installer component of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated local attacker to copy user-supplied files to system level directories with system level privileges. The vulnerability is due to the incorrect handling of directory paths. An attacker could exploit this vulnerability by creating a malicious file and copying the file to a system directory. An exploit could allow the attacker to copy malicious files to arbitrary locations with system level privileges. This could include DLL pre-loading, DLL hijacking, and other related attacks. To exploit this vulnerability, the attacker needs valid credentials on the Windows system. Cisco has released software updates that address the vulnerability described in this advisory. There are no workarounds that address this vulnerability. This advisory is available at the following link: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/ cisco-sa-ac-win-path-traverse-qO4HWBsj Affected Products o Vulnerable Products At the time of publication, this vulnerability affected Cisco AnyConnect Secure Mobility Client for Windows releases earlier than 4.8.02042. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information. Products Confirmed Not Vulnerable Only products listed in the Vulnerable Products section of this advisory are known to be affected by this vulnerability. Workarounds o There are no workarounds that address this vulnerability. Fixed Software o When considering software upgrades , customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories and Alerts page , to determine exposure and a complete upgrade solution. In all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers. Fixed Releases At the time of publication, Cisco AnyConnect Secure Mobility Client for Windows releases 4.8.02042 and later contained the fix for this vulnerability. See the Details section in the bug ID(s) at the top of this advisory for the most complete and current information. Exploitation and Public Announcements o The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory. Source o This vulnerability was found during the resolution of a Cisco TAC support case. Cisco Security Vulnerability Policy o To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy . This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco. URL o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/ cisco-sa-ac-win-path-traverse-qO4HWBsj Revision History o +---------+-------------------------+---------+--------+------------------+ | Version | Description | Section | Status | Date | +---------+-------------------------+---------+--------+------------------+ | 1.0 | Initial public release. | - | Final | 2020-February-19 | +---------+-------------------------+---------+--------+------------------+ - --------------------------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 iQIVAwUBXk9MeWaOgq3Tt24GAQhf9hAArW21iktT16IjMP9AC1JXypsHVu6aUe3j i343d2AC5oqov6RY9ATuAH4jsBlJ5219OZqDnIbw7D0HlsTpjiWGVq2TqHDTalEm med3Hx8VONRnYQ57+Oco5r1TWIf/v2YTQsx2ySZ69CimRd1H8Pdja+Pl8GdwUG6j rpd9wy2ch/j935Da5Fd/S0gkJFHD69NxywSDYlwA2RhNi1/jV8VqaBlR/duxOwzt 6/XhtpnfKEwjqsRLmHURSt+GP2LxPIyDcVIYTpBmPdouNYjWQmT3/8OT8TNzEYoX BEjXUXg2sMpECtqzmdyki6j9X7QKEMYo4lYHf9LOZBPnWbP1YuKxxqGSVOUSAHz5 9bnD9/ucga5cfQ3npa2yr93SLKkuXrr2c5C0MZ8OPaBlzsm8BIUae7xift9oluUN Su46XvqC8mWjpa+nnhH8mfPZLjReFopVgBy4lGJZA4MzTEmBNsKcTMhjqD1lt8UO Jg9wbA62kiIeUN5QtNPvKP1ipjqW6sAGNVv18T9P43rBU1PzsThJ0QDCcJwcHoti uXn7A45yeQLchFKBtVhuuD53cndne+xSxWg8fLgCF5xgJotFMq4xxPXsKvHaUKGc JBlLiYDWIz5T0pCkPpBrEOJ3VLrrb2gAdf5wikvY0IGF/kMwDEOx7Q5Y0PIDlDhk hGDdfzeb3l4= =miS8 -----END PGP SIGNATURE-----