Vulnerability Details : CVE-2023-28807
In Zscaler Internet Access (ZIA) a mismatch between Connect Host and Client Hello's Server Name Indication (SNI) enables attackers to evade network security controls by hiding their communications within legitimate traffic.
Products affected by CVE-2023-28807
- cpe:2.3:a:zscaler:secure_internet_and_saas_access:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2023-28807
0.06%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 31 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2023-28807
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
5.1
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N |
2.5
|
2.5
|
Zscaler, Inc. | 2024-01-31 |
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
3.9
|
3.6
|
NIST | 2024-02-09 |
CWE ids for CVE-2023-28807
-
The product does not validate, or incorrectly validates, a certificate.Assigned by:
- cve@zscaler.com (Secondary)
- nvd@nist.gov (Primary)
References for CVE-2023-28807
-
https://help.zscaler.com/zia/configuring-advanced-settings#dns-optimization
Configuring Advanced Settings | ZscalerProduct
-
https://help.zscaler.com/zia/configuring-advanced-settings#domain-fronting
Configuring Advanced Settings | ZscalerProduct
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