CVE-2019-10191
Quick assessment
Affected
CZ.NIC knot-resolver
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.
Knot Resolver是一款使用C语言和LuaJIT编写的开源缓存DNS解析器。DNS resolver是其中的一个DNS解析器组件。 knot resolver 4.1.0之前版本中的DNS resolver存在输入验证错误漏洞。该漏洞源于网络系统或产品未对输入的数据进行正确的验证。
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I. Basic Information for CVE-2019-10191
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was discovered in DNS resolver of knot resolver before version 4.1.0 which allows remote attackers to downgrade DNSSEC-secure domains to DNSSEC-insecure state, opening possibility of domain hijack using attacks against insecure DNS protocol.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
knot resolver DNS resolver 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Knot Resolver是一款使用C语言和LuaJIT编写的开源缓存DNS解析器。DNS resolver是其中的一个DNS解析器组件。 knot resolver 4.1.0之前版本中的DNS resolver存在输入验证错误漏洞。该漏洞源于网络系统或产品未对输入的数据进行正确的验证。
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 |
|---|---|---|---|---|
| CZ.NIC | knot-resolver | all before 4.1.0 | - |
|
II. Public POCs for CVE-2019-10191
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Mailing List Discussions for CVE-2019-10191 (2)
-
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TMSSWBHINIX4WE6UDXWM66L7JYEK6XS6/ vendor-advisory x_refsource_FEDORA
Other References for CVE-2019-10191 (1)
-
https://www.knot-resolver.cz/2019-07-10-knot-resolver-4.1.0.html x_refsource_CONFIRM
IV. Related Vulnerabilities
V. Comments for CVE-2019-10191
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