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CVE-2020-25684

Quick assessment

Affected
n/a dnsmasq
Exploitation
High exploitation probability; assess promptly
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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 2.83版本之前存在安全漏洞，攻击者可以利用该漏洞执行DNS缓存中毒攻击。

AI Predicted 5.9 Difficulty: Hard EPSS 4.04% · P90
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I. Basic Information for CVE-2020-25684

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in dnsmasq before version 2.83. When getting a reply from a forwarded query, dnsmasq checks in the forward.c:reply_query() if the reply destination address/port is used by the pending forwarded queries. However, it does not use the address/port to retrieve the exact forwarded query, substantially reducing the number of attempts an attacker on the network would have to perform to forge a reply and get it accepted by dnsmasq. This issue contrasts with RFC5452, which specifies a query's attributes that all must be used to match a reply. This flaw allows an attacker to perform a DNS Cache Poisoning attack. If chained with CVE-2020-25685 or CVE-2020-25686, the attack complexity of a successful attack is reduced. The highest threat from this vulnerability is to data integrity.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
不恰当实现的标准安全检查
Source: CVE Program / CVE List V5
Vulnerability Title
Dnsmasq 安全漏洞
Source: CNNVD (China National Vulnerability Database)
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 2.83版本之前存在安全漏洞，攻击者可以利用该漏洞执行DNS缓存中毒攻击。
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

Vendor Product Affected Versions CPE Subscribe
- dnsmasq dnsmasq 2.83 -

II. Public POCs for CVE-2020-25684

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III. Intelligence Information for CVE-2020-25684

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Vendor Advisories for CVE-2020-25684 (3)

Mailing List Discussions for CVE-2020-25684 (3)

Other References for CVE-2020-25684 (2)

Same Patch Batch · n/a · 2021-01-20 · 34 CVEs total

CVE-2020-28483 7.1 HIGH HTTP Response Splitting
CVE-2021-23326 6.3 MEDIUM Command Injection
CVE-2020-28452 6.3 MEDIUM Cross-site Request Forgery (CSRF)
CVE-2020-25385 Nagios Log Server 跨站脚本漏洞
CVE-2021-3110 Prestashop SQL注入漏洞
CVE-2021-3137 XWiki 跨站脚本漏洞
CVE-2020-27851 Rocketgenius Gravity Forms 跨站脚本漏洞
CVE-2020-27852 Rocketgenius Gravity Forms 跨站脚本漏洞
CVE-2020-27850 Rocketgenius Gravity Forms 跨站脚本漏洞
CVE-2020-13133 Tufin Securechange 跨站脚本漏洞
CVE-2020-13134 Tufin Securechange 跨站脚本漏洞
CVE-2020-14360 X.Org Server 缓冲区错误漏洞
CVE-2020-19364 OpenEMR 代码问题漏洞
CVE-2020-19363 Vtiger CRM 信息泄露漏洞
CVE-2020-19362 Vtiger CRM 跨站脚本漏洞
CVE-2020-19361 MedinTux 跨站脚本漏洞
CVE-2020-19360 FHEM 信息泄露漏洞
CVE-2020-25685 dnsmasq 加密问题漏洞
CVE-2020-35217 Eclipse Vertx-web 跨站请求伪造漏洞
CVE-2020-35239 CakePHP 跨站请求伪造漏洞

Showing top 20 of 34 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: dnsmasq
Same vendor: n/a
Same weakness: CWE-358

V. Comments for CVE-2020-25684

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