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CVE-2017-3813

7.8 · HIGH

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…

Published Feb 9, 2017CWE-264EPSS 1.71%

Overview

CVE-2017-3813 is a high-severity vulnerability. It was published on February 9, 2017 and has a CVSS 3.0 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.0 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refwww.securityfocus.com/bid/96145Refwww.securitytracker.com/id/1037796Reftools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170208-anyconnectRefwww.exploit-db.com/exploits/41476/Refwww.securityfocus.com/bid/96145Refwww.securitytracker.com/id/1037796Reftools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170208-anyconnectRefwww.exploit-db.com/exploits/41476/

How CyberStrike helps

Frequently asked questions

What is CVE-2017-3813?

CVE-2017-3813 is a high-severity vulnerability. It was published on February 9, 2017 and has a CVSS 3.0 base score of 7.8 (HIGH).

How severe is CVE-2017-3813?

This vulnerability has a CVSS 3.0 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2017-3813?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2017-3813?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2017-3813 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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