==================================================================== CERT-Renater Note d'Information No. 2018/VULN092 _____________________________________________________________________ DATE : 08/03/2018 HARDWARE PLATFORM(S): Cisco Web Security Appliance. OPERATING SYSTEM(S): Cisco AsyncOS for Cisco Web Security Appliance versions 10.5.1. ===================================================================== https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180307-wsa _____________________________________________________________________ Cisco Security Advisory: Cisco Web Security Appliance FTP Authentication Bypass Vulnerability Advisory ID: cisco-sa-20180307-wsa Revision: 1.0 For Public Release: 2018 March 7 16:00 GMT Last Updated: 2018 March 7 16:00 GMT CVE ID(s): CVE-2018-0087 CVSS Score v(3): 7.3 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L +--------------------------------------------------------------------- Summary ======= A vulnerability in the FTP server of the Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to log in to the FTP server of the device without a valid password. The attacker does need to have a valid username. The vulnerability is due to incorrect FTP user credential validation. An attacker could exploit this vulnerability by using FTP to connect to the management IP address of the targeted device. A successful exploit could allow the attacker to log in to the FTP server of the Cisco WSA without having a valid password. Cisco has released software updates that address this vulnerability. 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-20180307-wsa ["https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180307-wsa"] ========================================================== + CERT-RENATER | tel : 01-53-94-20-44 + + 23 - 25 Rue Daviel | fax : 01-53-94-20-41 + + 75013 Paris | email: cert@support.renater.fr + ==========================================================