CVE-2019-10190
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。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2019-10190
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 component of knot resolver through version 3.2.0 before 4.1.0 which allows remote attackers to bypass DNSSEC validation for non-existence answer. NXDOMAIN answer would get passed through to the client even if its DNSSEC validation failed, instead of sending a SERVFAIL packet. Caching is not affected by this particular bug but see CVE-2019-10191.
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 | from 3.2.0 before 4.1.0 | - |
|
II. Public POCs for CVE-2019-10190
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2019-10190 (1)
-
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10190 x_refsource_CONFIRM
Mailing List Discussions for CVE-2019-10190 (2)
-
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TMSSWBHINIX4WE6UDXWM66L7JYEK6XS6/ vendor-advisory x_refsource_FEDORA
Other References for CVE-2019-10190 (1)
-
https://www.knot-resolver.cz/2019-07-10-knot-resolver-4.1.0.html x_refsource_CONFIRM
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V. Comments for CVE-2019-10190
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