CVE-2020-25687
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I. Basic Information for CVE-2020-25687
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
堆缓冲区溢出
Source: NVD (National Vulnerability Database)
Vulnerability Title
Dnsmasq 缓冲区错误漏洞
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 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。
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-2020-25687
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://www.jsof-tech.com/disclosures/dnspooq/x_refsource_MISC
- https://bugzilla.redhat.com/show_bug.cgi?id=1891568x_refsource_MISC
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QGB7HL3OWHTLEPSMLDGOMXQKG3KM2QME/vendor-advisoryx_refsource_FEDORA
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WYW3IR6APUSKOYKL5FT3ACTIHWHGQY32/vendor-advisoryx_refsource_FEDORA
- https://nvd.nist.gov/vuln/detail/CVE-2020-25687
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
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Same weakness: CWE-122
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