CVE-2018-0422 Details

CVE-2018-0422

Published: 2018-10-05
Last Modified: 2019-10-03
CVE Author: NIST National Vulnerability Database
CVE Assigner: psirt@cisco.com
Summary

A vulnerability in the folder permissions of Cisco Webex Meetings client for Windows could allow an authenticated, local attacker to modify locally stored files and execute code on a targeted device with the privilege level of the user. The vulnerability is due to folder permissions that grant a user the permission to read, write, and execute files in the Webex folders. An attacker could exploit this vulnerability to write malicious files to the Webex client directory, affecting all other users of the targeted device. A successful exploit could allow a user to execute commands with elevated privileges. Attacks on single-user systems are less likely to occur, as the attack must be carried out by the user on the user's own system. Multiuser systems have a higher risk of exploitation because folder permissions have an impact on all users of the device. For an attacker to exploit this vulnerability successfully, a second user must execute the locally installed malicious file to allow remote code execution to occur.

Analysis
Common Vulnerability Score System v2.0
Severity Medium
Base Score 6.9/10
Exploit Score 3.4/10
Access Vector Local
Access Complexity Medium
Authentication None
Impact Score 10/10
Confidentiality Impact Complete
Availability Impact Complete
Integrity Impact Complete
Vector String AV:L/AC:M/Au:N/C:C/I:C/A:C
Common Vulnerability Score System v3.1
Severity High
Base Score 7.3/10
Exploit Score 1.3/10
Access Vector Local
Access Complexity Low
Privileges Required Low
Impact Score 5.9/10
Confidentiality Impact High
Availability Impact High
Integrity Impact High
Scope Unchanged
User Interaction Required
Vector String CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Products Reported
CPE Vulnerable Start Excluding
References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180905-
http://www.securitytracker.com/id/1041681
http://www.securityfocus.com/bid/105281

CVE ID
CVE-2018-0422
Published
2018-10-05
Modified
2019-10-03
CVSSv2.0
Medium
CVSSv3.1
High
PCI Compliance
Fail
US-CERT Alert
No
CWE
CWE-732

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