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CVE-2020-37127— dnsmasq-utils 2.79-1 - 'dhcp_release' Denial of Service

Quick assessment

Affected
dnsmasq dnsmasq-utils
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

dnsmasq-utils是dnsmasq开源的一个辅助工具包。 dnsmasq-utils 2.79-1版本存在安全漏洞，该漏洞源于dhcp_release工具存在缓冲区溢出，可能导致拒绝服务。

CVSS 5.5 · Medium EPSS 0.21% · P10

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2020-37127

Vulnerability Information
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Vulnerability Title
dnsmasq-utils 2.79-1 - 'dhcp_release' Denial of Service
Source: CVE Program / CVE List V5
Vulnerability Description
Dnsmasq-utils 2.79-1 contains a buffer overflow vulnerability in the dhcp_release utility that allows attackers to cause a denial of service by supplying excessive input. Attackers can trigger a core dump and terminate the dhcp_release process by sending a crafted input string longer than 16 characters.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
栈缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
dnsmasq-utils 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
dnsmasq-utils是dnsmasq开源的一个辅助工具包。 dnsmasq-utils 2.79-1版本存在安全漏洞，该漏洞源于dhcp_release工具存在缓冲区溢出，可能导致拒绝服务。
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

Vendor Product Affected Versions CPE Subscribe
dnsmasq dnsmasq-utils 2.79 -

II. Public POCs for CVE-2020-37127

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III. Intelligence Information for CVE-2020-37127

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Exploits & Public PoCs for CVE-2020-37127 (1)

IV. Related Vulnerabilities

Same vendor: dnsmasq
Same weakness: CWE-121

V. Comments for CVE-2020-37127

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