CVE-2021-23852— Denial of Service (DoS) due to invalid web parameter
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存在资源管理错误漏洞，该漏洞源于没有对管理员权限用户输入的URL中无效参数进行过滤。攻击者可利用该漏洞导致摄像机在几秒钟内没有响应，并导致拒绝服务(DoS)。
Possible ATT&CK Techniques 1 AI
T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2021-23852
Vulnerability Information
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Vulnerability Title
Denial of Service (DoS) due to invalid web parameter
Source: CVE Program / CVE List V5
Vulnerability Description
An authenticated attacker with administrator rights Bosch IP cameras can call an URL with an invalid parameter that causes the camera to become unresponsive for a few seconds and cause a Denial of Service (DoS).
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
Bosch IP cameras 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Bosch IP cameras是德国（Bosch）的网络相机 Bosch IP cameras存在资源管理错误漏洞，该漏洞源于没有对管理员权限用户输入的URL中无效参数进行过滤。攻击者可利用该漏洞导致摄像机在几秒钟内没有响应，并导致拒绝服务(DoS)。
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-2021-23852
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2021-23852 (1)
-
https://psirt.bosch.com/security-advisories/bosch-sa-478243-bt.html x_refsource_CONFIRM
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-2021-23853 | 8.3 HIGH | Improper Input Validation of HTTP Headers |
| CVE-2021-23854 | 8.3 HIGH | Reflected XSS in page parameter |
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V. Comments for CVE-2021-23852
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