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CVE-2021-33683

Quick assessment

Affected
SAP SE SAP Web Dispatcher and Internet Communication Manager
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.

SAP Web dispatcher是德国思爱普（SAP）公司的Load Balancing 的核心组件，支持负载均衡，提供反向代理的功能，使得外网用户可以访问到内部应用。 SAP Web Dispatcher 和 Internet Communication Manager 存在安全漏洞，该漏洞源于产品中存在HTTP请求走私漏洞。以下产品及版本受到影响：SAP Web Dispatcher and Internet Communication Manager, Versions - KRNL32NUC

AI Predicted 8.6 Difficulty: Moderate EPSS 0.55% · P43
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I. Basic Information for CVE-2021-33683

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
SAP Web Dispatcher and Internet Communication Manager (ICM), versions - KRNL32NUC 7.21, 7.21EXT, 7.22, 7.22EXT, KRNL32UC 7.21, 7.21EXT, 7.22, 7.22EXT, KRNL64NUC 7.21, 7.21EXT, 7.22, 7.22EXT, 7.49, KRNL64UC 7.21, 7.21EXT, 7.22, 7.22EXT, 7.49, 7.53, 7.73, WEBDISP 7.53, 7.73, 7.77, 7.81, 7.82, 7.83, KERNEL 7.21, 7.22, 7.49, 7.53, 7.73, 7.77, 7.81, 7.82, 7.83, process invalid HTTP header. The incorrect handling of the invalid Transfer-Encoding header in a particular manner leads to a possibility of HTTP Request Smuggling attack. An attacker could exploit this vulnerability to bypass web application firewall protection, divert sensitive data such as customer requests, session credentials, etc.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
HTTP请求的解释不一致性(HTTP请求私运)
Source: CVE Program / CVE List V5
Vulnerability Title
SAP Web Dispatcher 和 Internet Communication Manager 环境问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SAP Web dispatcher是德国思爱普（SAP）公司的Load Balancing 的核心组件，支持负载均衡，提供反向代理的功能，使得外网用户可以访问到内部应用。 SAP Web Dispatcher 和 Internet Communication Manager 存在安全漏洞，该漏洞源于产品中存在HTTP请求走私漏洞。以下产品及版本受到影响：SAP Web Dispatcher and Internet Communication Manager, Versions - KRNL32NUC
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
SAP SE SAP Web Dispatcher and Internet Communication Manager < KRNL32NUC 7.21 -

II. Public POCs for CVE-2021-33683

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III. Intelligence Information for CVE-2021-33683

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Other References for CVE-2021-33683 (2)

Same Patch Batch · SAP SE · 2021-07-14 · 13 CVEs total

CVE-2021-33682 SAP Lumira 跨站脚本漏洞
CVE-2021-33687 SAP NetWeaver AS 信息泄露漏洞
CVE-2021-33689 SAP NetWeaver AS 安全漏洞
CVE-2021-33684 SAP NetWeaver AS ABAP 缓冲区错误漏洞
CVE-2021-33678 SAP NetWeaver AS ABAP 代码注入漏洞
CVE-2021-33670 SAP NetWeaver AS 安全漏洞
CVE-2021-33681 SAP 3D Visual Enterprise Viewer 缓冲区错误漏洞
CVE-2021-33677 SAP NetWeaver AS ABAP 安全漏洞
CVE-2021-33676 SAP CRM 安全漏洞
CVE-2021-33680 SAP 3D Visual Enterprise Viewer 安全漏洞
CVE-2021-33671 SAP NetWeaver 安全漏洞
CVE-2021-33667 SAP Business Objects Web Intelligence 安全漏洞

IV. Related Vulnerabilities

Same product: SAP Web Dispatcher and Internet Communication Manager
Same vendor: SAP SE
Same weakness: CWE-444

V. Comments for CVE-2021-33683

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