Home/CVE/An Improper Verification of Cryptographic Signature vulnerability in Zscaler Client Connector on Linux allows replacing
CVE

CVE-2023-28804

An Improper Verification of Cryptographic Signature vulnerability in Zscaler Client Connector on Linux allows replacing

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.

HIGH · CVSS 8.2 EPSS 0.0003
Schedule remediation
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-347Improper Verification of Cryptographic Signature
CWE-347Improper Verification of Cryptographic Signature
▤

Affected Products & Versions

1
zscaler client connector< 1.4.0.105
▣

Scoring & Timeline

8.2
HIGH · CVSS v3.1 · cve@zscaler.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD23 Oct 2023 · 02:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
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References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://help.zscaler.com/client-connector/client-connector-app-release-summary-2023Release Notes
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