CVE-2017-3813
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.71%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.0
- 7.8 HIGHCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.71% probability · 76th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-264, CWE-862
- Affected
- cisco/anyconnect secure mobility client
- Source
- psirt@cisco.com
References
- http://www.securityfocus.com/bid/96145
- http://www.securitytracker.com/id/1037796
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170208-anyconnectVendor Advisory
- https://www.exploit-db.com/exploits/41476/
- http://www.securityfocus.com/bid/96145
- http://www.securitytracker.com/id/1037796
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170208-anyconnectVendor Advisory
- https://www.exploit-db.com/exploits/41476/
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.