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I. Basic Information for CVE-2021-40346
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
An integer overflow exists in HAProxy 2.0 through 2.5 in htx_add_header that can be exploited to perform an HTTP request smuggling attack, allowing an attacker to bypass all configured http-request HAProxy ACLs and possibly other ACLs.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Haproxy HAProxy 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Haproxy HAProxy是法国HAProxy（Haproxy）公司的一款开源的TCP/HTTP负载均衡服务器。该服务器提供4层、7层代理，并能支持上万级别的连接，具有高效、稳定等特点。 HAProxy 存在输入验证错误漏洞，该漏洞源于 HAProxy 中的 htx_add_header() 和 htx_add_trailer() 函数中缺少标头名称长度检查可能会导致请求走私攻击或响应拆分攻击。
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
VendorProductAffected VersionsCPESubscribe
-n/a n/a -
II. Public POCs for CVE-2021-40346
#POC DescriptionSource LinkShenlong Link
1CVE-2021-40346 PoC (HAProxy HTTP Smuggling)https://github.com/knqyf263/CVE-2021-40346POC Details
2CVE-2021-40346 integer overflow enables http smugglinghttps://github.com/donky16/CVE-2021-40346-POCPOC Details
3Nonehttps://github.com/alikarimi999/CVE-2021-40346POC Details
4HAProxy CVE-2021-40346https://github.com/Vulnmachines/HAProxy_CVE-2021-40346POC Details
5CVE-2021-40346 - HaProxy HTTP request smuggling through integer overflowhttps://github.com/alexOarga/CVE-2021-40346POC Details
6HTTP Request Smugglinghttps://github.com/BoianEduard/CVE-2021-40346POC Details
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III. Intelligence Information for CVE-2021-40346
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IV. Related Vulnerabilities
Same product: n/a
Same vendor: n/a
V. Comments for CVE-2021-40346

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