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CVE-2021-23853— Improper Input Validation of HTTP Headers

Quick assessment

Affected
Bosch CPP Firmware
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.

Bosch IP cameras是德国（Bosch）的网络相机 Bosch IP cameras存在安全漏洞，该漏洞源于对 HTTP 请求头的不正确验证。攻击者可以通过精心设计的 URL 注入任意 HTTP 请求头。

CVSS 8.3 · High EPSS 0.86% · P55

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-23853

Vulnerability Information
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Vulnerability Title
Improper Input Validation of HTTP Headers
Source: CVE Program / CVE List V5
Vulnerability Description
In Bosch IP cameras, improper validation of the HTTP header allows an attacker to inject arbitrary HTTP headers through crafted URLs.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Bosch IP cameras 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Bosch IP cameras是德国（Bosch）的网络相机 Bosch IP cameras存在安全漏洞，该漏洞源于对 HTTP 请求头的不正确验证。攻击者可以通过精心设计的 URL 注入任意 HTTP 请求头。
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
Bosch CPP Firmware all -

II. Public POCs for CVE-2021-23853

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III. Intelligence Information for CVE-2021-23853

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Other References for CVE-2021-23853 (1)

Same Patch Batch · Bosch · 2021-06-09 · 5 CVEs total

CVE-2021-23847 9.8 CRITICAL Unauthenticated Information Extraction Vulnerability
CVE-2021-23848 8.3 HIGH Reflected XSS in URL handler
CVE-2021-23854 8.3 HIGH Reflected XSS in page parameter
CVE-2021-23852 4.9 MEDIUM Denial of Service (DoS) due to invalid web parameter

IV. Related Vulnerabilities

Same product: CPP Firmware
Same vendor: Bosch
Same weakness: CWE-20

V. Comments for CVE-2021-23853

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