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CVE-2021-4248— kapetan dns Request.cs entropy

Quick assessment

Affected
kapetan dns
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.

kapetan DNS是一个DNS库。 kapetan DNS 6.1.0及以前存在安全漏洞，该漏洞源于其DNS/Protocol/Request.cs文件中的一些未知功能导致prng的熵不足。

CVSS 5.6 · Medium EPSS 0.75% · P52

Possible ATT&CK Techniques 1 AI

T1590 · Gather Victim Network Information
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I. Basic Information for CVE-2021-4248

Vulnerability Information
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Vulnerability Title
kapetan dns Request.cs entropy
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was found in kapetan dns up to 6.1.0. It has been rated as problematic. Affected by this issue is some unknown functionality of the file DNS/Protocol/Request.cs. The manipulation leads to insufficient entropy in prng. The attack may be launched remotely. Upgrading to version 7.0.0 is able to address this issue. The name of the patch is cf7105aa2aae90d6656088fe5a8ee1d5730773b6. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-216188.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
使用不充分的随机数
Source: CVE Program / CVE List V5
Vulnerability Title
kapetan DNS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
kapetan DNS是一个DNS库。 kapetan DNS 6.1.0及以前存在安全漏洞，该漏洞源于其DNS/Protocol/Request.cs文件中的一些未知功能导致prng的熵不足。
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
kapetan dns 6.0 -

II. Public POCs for CVE-2021-4248

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III. Intelligence Information for CVE-2021-4248

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Patches & Fixes for CVE-2021-4248 (2)

Vendor Advisories for CVE-2021-4248 (1)

Other References for CVE-2021-4248 (1)

IV. Related Vulnerabilities

Same weakness: CWE-330

V. Comments for CVE-2021-4248

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