High severity · published Oct 5, 2018
CVE-2018-0422
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…
7.3
CVSS
1.1%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.1% · higher than 65% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WB
Webex Business Suite 31 · Cisco
All versions, or not specified · source: NVD
WB
Webex Business Suite 32 · Cisco
before 32.15.20 · source: NVD
WB
Webex Business Suite 33 · Cisco
before 33.4 · source: NVD
WM
Webex Meetings Online · Cisco
before 1.3.37; t31.20; t31.20.2 · source: NVD
WM
Webex Meetings Server · Cisco
through 3.0; 3.0 · source: NVD
Affected product
WB
Webex Business Suite 31
Cisco
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