Home/CVE/Buffer overflow vulnerability in the signelf library used by Zscaler Client Connector on Linux allows Code Injection. Th
CVE

CVE-2023-28793

Buffer overflow vulnerability in the signelf library used by Zscaler Client Connector on Linux allows Code Injection. Th

Buffer overflow vulnerability in the signelf library used by Zscaler Client Connector on Linux allows Code Injection. This issue affects Zscaler Client Connector for Linux: before 1.3.1.6.

HIGH · CVSS 7.8 EPSS 0.00042
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-787Out-of-bounds Write
CWE-94Improper Control of Generation of Code ('Code Injection')
▤

Affected Products & Versions

1
zscaler client connector< 1.3.1.6
▣

Scoring & Timeline

7.8
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:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

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-2022?applicable_category=Linux&applicable_version=1.3.1&deployment_date=2022-09-19Release Notes
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