Vulnerability Information
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Vulnerability Title
N/A
Vulnerability Description
A flaw was found in dnsmasq before version 2.83. When receiving a query, dnsmasq does not check for an existing pending request for the same name and forwards a new request. By default, a maximum of 150 pending queries can be sent to upstream servers, so there can be at most 150 queries for the same name. This flaw allows an off-path attacker on the network to substantially reduce the number of attempts that it would have to perform to forge a reply and have it accepted by dnsmasq. This issue is mentioned in the "Birthday Attacks" section of RFC5452. If chained with CVE-2020-25684, the attack complexity of a successful attack is reduced. The highest threat from this vulnerability is to data integrity.
CVSS Information
N/A
Vulnerability Type
不恰当实现的标准安全检查
Vulnerability Title
Dnsmasq 安全特征问题漏洞
Vulnerability Description
Dnsmasq是一款使用C语言编写的轻量级DNS转发和DHCP、TFTP服务器。 Dnsmasq 存在安全特征问题漏洞，该漏洞源于不会检查现有的同名待处理请求，并转发一个新的请求，从而允许攻击者执行一个“生日攻击”场景来伪造应答，并可能破坏DNS缓存。
CVSS Information
N/A
Vulnerability Type
N/A