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CVE-2023-38522— Apache Traffic Server: Incomplete field name check allows request smuggling

Quick assessment

Affected
Apache Software Foundation Apache Traffic Server
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.

Apache Traffic Server（ATS）是美国阿帕奇（Apache）基金会的一套可扩展的HTTP代理和缓存服务器。 Apache Traffic Server 8.0.0版本至8.1.10版本和9.0.0版本至9.2.4版本存在输入验证错误漏洞，该漏洞源于接受 HTTP 字段名称不允许的字符，并将格式错误的请求转发到原始服务器。

AI Predicted 7.5 Difficulty: Moderate EPSS 0.99% · P62

Possible ATT&CK Techniques 1 AI

T1135 · Network Share Discovery
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I. Basic Information for CVE-2023-38522

Vulnerability Information
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Vulnerability Title
Apache Traffic Server: Incomplete field name check allows request smuggling
Source: CVE Program / CVE List V5
Vulnerability Description
Apache Traffic Server accepts characters that are not allowed for HTTP field names and forwards malformed requests to origin servers. This can be utilized for request smuggling and may also lead cache poisoning if the origin servers are vulnerable. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.10, from 9.0.0 through 9.2.4. Users are recommended to upgrade to version 8.1.11 or 9.2.5, which fixes the issue.
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
Apache Traffic Server 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache Traffic Server（ATS）是美国阿帕奇（Apache）基金会的一套可扩展的HTTP代理和缓存服务器。 Apache Traffic Server 8.0.0版本至8.1.10版本和9.0.0版本至9.2.4版本存在输入验证错误漏洞，该漏洞源于接受 HTTP 字段名称不允许的字符，并将格式错误的请求转发到原始服务器。
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
Apache Software Foundation Apache Traffic Server 8.0.0 ~ 8.1.10 -

II. Public POCs for CVE-2023-38522

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III. Intelligence Information for CVE-2023-38522

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Mailing List Discussions for CVE-2023-38522 (1)

Same Patch Batch · Apache Software Foundation · 2024-07-26 · 4 CVEs total

CVE-2024-35296 Apache Traffic Server: Invalid Accept-Encoding can force forwarding requests
CVE-2024-35161 Apache Traffic Server: Incomplete check for chunked trailer section allows request smuggli
CVE-2024-25090 Apache Roller: Insufficient input validation for some user profile and bookmark fields whe

IV. Related Vulnerabilities

Same product: Apache Traffic Server
Same vendor: Apache Software Foundation
Same weakness: CWE-444

V. Comments for CVE-2023-38522

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