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CVE-2021-36754

Quick assessment

Affected
n/a n/a
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Powerdns PowerDNS Authoritative Server是荷兰PowerDNS（Powerdns）公司的一款DNS服务器。 PowerDNS Authoritative Server存在缓冲区错误漏洞，该漏洞的存在是由于处理DNS查询时的边界条件。远程攻击者可利用该漏洞可以使用QTYPE 65535发送一个特别设计的查询，触发边界读取错误并执行拒绝服务(DoS)攻击。该漏洞允许远程攻击者可利用该漏洞执行拒绝服务(DoS)攻击。

AI Predicted 7.5 Difficulty: Trivial EPSS 64.86% · P99

Possible ATT&CK Techniques 1 AI

T1211 · Exploitation for Stealth
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I. Basic Information for CVE-2021-36754

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
PowerDNS Authoritative Server 4.5.0 before 4.5.1 allows anybody to crash the process by sending a specific query (QTYPE 65535) that causes an out-of-bounds exception.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
PowerDNS Authoritative Server 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Powerdns PowerDNS Authoritative Server是荷兰PowerDNS（Powerdns）公司的一款DNS服务器。 PowerDNS Authoritative Server存在缓冲区错误漏洞，该漏洞的存在是由于处理DNS查询时的边界条件。远程攻击者可利用该漏洞可以使用QTYPE 65535发送一个特别设计的查询，触发边界读取错误并执行拒绝服务(DoS)攻击。该漏洞允许远程攻击者可利用该漏洞执行拒绝服务(DoS)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)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
- n/a n/a -

II. Public POCs for CVE-2021-36754

# POC Description Source Link Shenlong Link
1 PowerDNS Authoritative Server 4.5.0 before 4.5.1 allows anybody to crash the process by sending a specific query (QTYPE 65535) that causes an out-of-bounds exception. https://github.com/projectdiscovery/nuclei-templates/blob/main/javascript/cves/2021/CVE-2021-36754.yaml POC Details
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III. Intelligence Information for CVE-2021-36754

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Mailing List Discussions for CVE-2021-36754 (1)

Other References for CVE-2021-36754 (2)

Same Patch Batch · n/a · 2021-07-27 · 33 CVEs total

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Showing top 20 of 33 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: n/a
Same vendor: n/a

V. Comments for CVE-2021-36754

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