CVE-2017-3813 Privilege escalation in Cisco AnyConnect Secure Mobility Client Software for Windows Versions prior to released versions 4.4.00243 and later and 4.3.05017 and later.
Local attackers can exploit insufficient access controls in the SBL module to launch Internet Explorer with SYSTEM privileges, enabling privileged command execution.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2017-3813?
CVE-2017-3813 is a high-severity vulnerability in Cisco Anyconnect Secure Mobility Client, published on 9 Feb 2017. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Which versions are affected by CVE-2017-3813?
It affects 1 product.
Products include Cisco Anyconnect Secure Mobility Client.
How do I fix CVE-2017-3813?
No fix has been published for CVE-2017-3813 yet. Limit exposure of the affected software until one is available.
Is CVE-2017-3813 being exploited?
There is no known exploitation of CVE-2017-3813 in the wild and no public exploit code.
Public exploit code: 1 Exploit-DB entry.
Other vulnerabilities in Cisco Anyconnect Secure Mobility Client
Sources
Also known as GHSA-v2w8-r4gc-fv4c.