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I. Basic Information for CVE-2021-23351
Vulnerability Information

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Vulnerability Title
Denial of Service (DoS)
Source: NVD (National Vulnerability Database)
Vulnerability Description
The package github.com/pires/go-proxyproto before 0.5.0 are vulnerable to Denial of Service (DoS) via the parseVersion1() function. The reader in this package is a default bufio.Reader wrapping a net.Conn. It will read from the connection until it finds a newline. Since no limits are implemented in the code, a deliberately malformed V1 header could be used to exhaust memory in a server process using this code - and create a DoS. This can be exploited by sending a stream starting with PROXY and continuing to send data (which does not contain a newline) until the target stops acknowledging. The risk here is small, because only trusted sources should be allowed to send proxy protocol headers.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Pires go-proxyproto 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Pires go-proxyproto是 (Pires)开源的一个应用软件。提供一种安全的方式,可以跨NAT或TCP代理的多层安全地传输连接信息功能。 github.com/pires/go-proxyproto before 0.5.0 存在安全漏洞,该漏洞源于在代码中没有实现限制,V1 header可以使用此代码耗尽服务器进程中的内存,并创建一个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
VendorProductAffected VersionsCPESubscribe
-github.com/pires/go-proxyproto unspecified ~ 0.5.0 -
II. Public POCs for CVE-2021-23351
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III. Intelligence Information for CVE-2021-23351
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IV. Related Vulnerabilities
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