Vulnerability Information
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Vulnerability Title
N/A
Vulnerability Description
A flaw was found in dnsmasq before version 2.83. A heap-based buffer overflow was discovered in dnsmasq when DNSSEC is enabled and before it validates the received DNS entries. This flaw allows a remote attacker, who can create valid DNS replies, to cause an overflow in a heap-allocated memory. This flaw is caused by the lack of length checks in rfc1035.c:extract_name(), which could be abused to make the code execute memcpy() with a negative size in sort_rrset() and cause a crash in dnsmasq, resulting in a denial of service. The highest threat from this vulnerability is to system availability.
CVSS Information
N/A
Vulnerability Type
堆缓冲区溢出
Vulnerability Title
Dnsmasq 缓冲区错误漏洞
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 存在缓冲区错误漏洞，该漏洞源于sort rrset子例程中的基于堆的缓冲区溢出，该子例程在启用DNSSEC时并在验证接收到的DNS条目之前发生。
CVSS Information
N/A
Vulnerability Type
N/A