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Vulnerability of Cisco AnyConnect: privilege escalation via vpnagent

Synthesis of the vulnerability 

An attacker can run vpnagent of Cisco AnyConnect with a crafted command line, in order to escalate his privileges.
Vulnerable products: Cisco AnyConnect Secure Mobility Client, AnyConnect VPN Client.
Severity of this weakness: 2/4.
Creation date: 03/06/2015.
Références of this bulletin: 39158, CSCus86790, CVE-2015-0761, VIGILANCE-VUL-17046.

Description of the vulnerability 

The Cisco AnyConnect Secure Mobility Client for Linux include a program named vpnagent.

However, this program does not rightly checks the options in its command line before running command with root privileges.

An attacker can therefore run vpnagent of Cisco AnyConnect with a crafted command line, in order to escalate his privileges.
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This security alert impacts software or systems such as Cisco AnyConnect Secure Mobility Client, AnyConnect VPN Client.

Our Vigil@nce team determined that the severity of this security weakness is medium.

The trust level is of type confirmed by the editor, with an origin of user shell.

An attacker with a expert ability can exploit this security announce.

Solutions for this threat 

Cisco AnyConnect Secure Mobility Client: solution CSCus86790.
The solution CSCus86790 is available:
  https://tools.cisco.com/bugsearch/bug/CSCus86790
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