CVE-2017-6638

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Summary

CVECVE-2017-6638
StatePUBLISHED
Assignercisco
Source PriorityCVE Program / NVD first with legacy fallback
Published2017-06-08 13:29:00 UTC
Updated2025-04-20 01:37:25 UTC
DescriptionA 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.

Risk And Classification

Primary CVSS: v3.0 7.8 HIGH from [email protected]

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Problem Types: CWE-264 | CWE-20 | CWE-264 CWE-264

VersionSourceTypeScoreSeverityVector
3.0[email protected]Primary7.8HIGHCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
2.0[email protected]Primary7.2AV:L/AC:L/Au:N/C:C/I:C/A:C

CVSS v3.0 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0 Breakdown

Access Vector
Local
Access Complexity
Low
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete

AV:L/AC:L/Au:N/C:C/I:C/A:C

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Cisco Anyconnect Secure Mobility Client All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na Cisco AnyConnect Local Privilege Escalation Vulnerability affected Cisco AnyConnect Local Privilege Escalation Vulnerability Not specified

References

ReferenceSourceLinkTags
Cisco AnyConnect Secure Mobility Client CVE-2017-6638 Local Privilege Escalation Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Third Party Advisory, VDB Entry
Cisco AnyConnect Local Privilege Escalation Vulnerability af854a3a-2127-422b-91ae-364da2661108 tools.cisco.com Vendor Advisory
Cisco AnyConnect Secure Mobility Client DLL Loading Error Lets Local Users Obtain System Privileges - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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