Medium severity · published Nov 21, 2023
CVE-2023-28802
Disable Zscaler using machine tunnel restart
5.4
CVSS
0.2%
EPSS
No
On KEV
Description
An Improper Validation of Integrity Check Value in Zscaler Client Connector on Windows allows an authenticated user to disable ZIA/ZPA by interrupting the service restart from Zscaler Diagnostics. This issue affects Client Connector: before 4.2.0.149.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 14% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CC
Client Connector · Zscaler
before 4.2.0.149 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-28802
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-28802
Release Notes
https://help.zscaler.com/client-connector/client-connector-app-release-summary-2023?applicable_category=Windows&applicable_version=4.2
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