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vulnerability CVE-2017-6638

Cisco AnyConnect Secure Mobility Client: executing DLL code

Synthesis of the vulnerability

An attacker can create a malicious DLL, and then put it in the current directory of Cisco AnyConnect Secure Mobility Client for MS-Windows, in order to run code with the system privileges.
Impacted products: Cisco AnyConnect Secure Mobility Client.
Severity: 2/4.
Creation date: 08/06/2017.
Identifiers: CERTFR-2017-AVI-171, cisco-sa-20170607-anyconnect, CVE-2017-6638, VIGILANCE-VUL-22920.

Description of the vulnerability

The Cisco AnyConnect Secure Mobility Client product uses external shared libraries (DLL).

However, if the working directory contains a malicious DLL, it is automatically loaded.

An attacker can therefore create a malicious DLL, and then put it in the current directory of Cisco AnyConnect Secure Mobility Client for MS-Windows, in order to run code with the system privileges.
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