Medium severity · published Oct 23, 2023
CVE-2023-28804
Linux ZCC allows unsigned updates, allowing elevated Code Execution
5.3
CVSS
0.3%
EPSS
No
On KEV
Description
An Improper Verification of Cryptographic Signature vulnerability in Zscaler Client Connector on Linux allows replacing binaries.This issue affects Linux Client Connector: before 1.4.0.105
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 21% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CC
Client Connector · Zscaler
before 1.4.0.105 · source: vendor, NVD, CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-28804
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-28804
Release Notes
https://help.zscaler.com/client-connector/client-connector-app-release-summary-2023
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