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CVE-2017-6638: A vulnerability in how DLL files are loaded with Cisco AnyConnect Secure Mobility Client for Windows could...

A vulnerability in how DLL files are loaded with Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to install and run an executable file with privileges equivalent to the Microsoft Windows SYSTEM account. The vulnerability is due to incomplete input validation of path and file names of a DLL file before it is loaded. An attacker could exploit this vulnerability by creating a malicious DLL file and installing it in a specific system directory. A successful exploit could allow the attacker to execute commands on the underlying Microsoft Windows host with privileges equivalent to the SYSTEM account. The attacker would need valid user credentials to exploit this vulnerability. This vulnerability affects all Cisco AnyConnect Secure Mobility Client for Windows software versions prior to 4.4.02034. Cisco Bug IDs: CSCvc97928.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysis

Security readout for executives and security teams

This is a Windows endpoint privilege-escalation issue in Cisco AnyConnect. A user who already has valid local credentials could abuse unsafe DLL loading to run code as Windows SYSTEM. That can turn a compromised standard account into full host control. Exposure is limited to Windows systems running Cisco AnyConnect Secure Mobility Client before version 4.4.02034. The source bundle does not identify non-Windows clients as affected. Treat this as a near-term endpoint hardening priority, especially for laptops and VPN users. It is not remote unauthenticated compromise, but it can deepen damage after account compromise or local foothold. Mitigation focus: Upgrade Cisco AnyConnect Secure Mobility Client for Windows to 4.4.02034 or later.; Prioritize endpoints used by administrators, VPN users, and high-value business teams.; Check Cisco’s advisory for any additional vendor-specific remediation guidance..

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CVE-2017-6638 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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0CVSS vectors
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2Source links

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Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/aCisco AnyConnect Local Privilege Escalation VulnerabilityCisco AnyConnect Local Privilege Escalation VulnerabilityListed
Weakness

CWE details

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Permissions, Privileges, and Access Controls

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