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I. Basic Information for CVE-2020-11076
Vulnerability Information

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Vulnerability Title
HTTP Smuggling via Transfer-Encoding Header in Puma
Source: NVD (National Vulnerability Database)
Vulnerability Description
In Puma (RubyGem) before 4.3.4 and 3.12.5, an attacker could smuggle an HTTP response, by using an invalid transfer-encoding header. The problem has been fixed in Puma 3.12.5 and Puma 4.3.4.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
HTTP请求的解释不一致性(HTTP请求私运)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Puma 环境问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Puma是一款针对高并发应用的Web服务器。 Puma (RubyGem) 4.3.4之前版本和3.12.5之前版本中存在环境问题漏洞。攻击者可借助无效的transfer-encoding标头利用该漏洞实施HTTP走私攻击。
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
pumapuma < 3.12.5 -
II. Public POCs for CVE-2020-11076
#POC DescriptionSource LinkShenlong Link
1Puma, CVE-2020-11076 and CVE-2020-11077https://github.com/dentarg/cougarPOC Details
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III. Intelligence Information for CVE-2020-11076
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