Cisco Security Advisory
Cisco Web Security Appliance Python File Processing Privilege Escalation Vulnerability
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AV:L/AC:M/Au:S/C:C/I:C/A:C/E:POC/RL:OF/RC:C
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A vulnerability in the status-checking process of remote access tunnels for supporting Cisco Web Security Appliances (WSA) could allow an authenticated, local attacker to execute arbitrary Python code on the affected system.
The vulnerability is due to improper usage and handling of the pickle Python module by the affected software. An attacker could exploit this vulnerability by submitting a crafted pickle file to an affected device. A successful exploit could be used to conduct further attacks.
Cisco has confirmed the vulnerability; however, no software updates are available.
To exploit the vulnerability, the attacker must log in locally to the vulnerable device. The access requirement reduces the potential for exploitation.
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Cisco has released bug ID CSCut39259 for registered users that contains additional details and an up-to-date list of affected product versions.
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Administrators are advised to apply the appropriate updates as they become available.
Administrators are advised to allow only trusted users to access local systems.
Administrators are advised to monitor affected systems.
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Software updates are not available.
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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.
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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.
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Show LessVersion Description Section Status Date 1.0 Initial Release NA Final 2015-Apr-13
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