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CVE-2023-28800— Output encoding missing in redrurl parameter

Quick assessment

Affected
Zscaler Client Connector
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Zscaler Client Connector是zscaler的一个应用软件。一种安装在设备上的应用程序，可确保互联网流量和对组织内部应用程序的访问是安全的并符合组织的政策，即使不在公司网络时。 Zscaler Client Connector 存在安全漏洞，该漏洞源于当使用本地帐户进行管理时，重定向 url 参数未正确编码，从而允许 XSS。

CVSS 8.1 · High EPSS 0.55% · P44
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I. Basic Information for CVE-2023-28800

Vulnerability Information
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Vulnerability Title
Output encoding missing in redrurl parameter
Source: CVE Program / CVE List V5
Vulnerability Description
When using local accounts for administration, the redirect url parameter was not encoded correctly, allowing for an XSS attack providing admin login.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Zscaler Client Connector 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Zscaler Client Connector是zscaler的一个应用软件。一种安装在设备上的应用程序，可确保互联网流量和对组织内部应用程序的访问是安全的并符合组织的政策，即使不在公司网络时。 Zscaler Client Connector 存在安全漏洞，该漏洞源于当使用本地帐户进行管理时，重定向 url 参数未正确编码，从而允许 XSS。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Zscaler Client Connector 0 ~ 3.9 Mac, 3.7 Win, 1.9.3 iOS, 1.10.2 Android, 1.10.1 Chrome OS, 1.4 Linux -

II. Public POCs for CVE-2023-28800

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III. Intelligence Information for CVE-2023-28800

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Other References for CVE-2023-28800 (6)

IV. Related Vulnerabilities

Same product: Client Connector
Same vendor: Zscaler
Same weakness: CWE-79

V. Comments for CVE-2023-28800

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