Vulnerability CVE-2017-3813


Published: 2017-02-09

Description:
A vulnerability in the Start Before Logon (SBL) module of Cisco AnyConnect Secure Mobility Client Software for Windows could allow an unauthenticated, local attacker to open Internet Explorer with the privileges of the SYSTEM user. The vulnerability is due to insufficient implementation of the access controls. An attacker could exploit this vulnerability by opening the Internet Explorer browser. An exploit could allow the attacker to use Internet Explorer with the privileges of the SYSTEM user. This may allow the attacker to execute privileged commands on the targeted system. This vulnerability affects versions prior to released versions 4.4.00243 and later and 4.3.05017 and later. Cisco Bug IDs: CSCvc43976.

See advisories in our WLB2 database:
Topic
Author
Date
Med.
Cisco AnyConnect Start Before Logon (SBL) local privilege escalation
Pcchillin
01.03.2017

Vendor: Cisco
Product: Anyconnect secure mobility client 
Version:
4.3.04027
4.3.03086
4.3.02039
4.3.01095
4.3.00748
4.2.06014
4.2.05015
4.2.04039
4.2.04018
4.2.03013
4.2.02075
4.2.01035
4.2.01022
4.2.00096
4.1.08005
4.1.06020
4.1.06013
4.1.04011
4.1.02011
4.1.00028
4.0.00061
4.0.00057
4.0.00052
4.0.00051
4.0.00048

CVSS2 => (AV:L/AC:L/Au:N/C:C/I:C/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.2/10
10/10
3.9/10
Exploit range
Attack complexity
Authentication
Local
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
Complete

 References:
http://www.securityfocus.com/bid/96145
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170208-anyconnect
https://www.exploit-db.com/exploits/41476/

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