Public exploit available

Public proof-of-concept or exploit code exists (ExploitDB / Metasploit / Nuclei).

CVE-2021-36754 — Improper Restriction of Operations within the Bounds of a Memory Buffer in Authoritative Server

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer7 documents7 sources

Severity

7.5HIGHNVD

EPSS

81.3%

top 0.83%

CISA KEV

Not in KEV

Exploit

PoC available

Public exploit / PoC exists

Affected products

Powerdns Authoritative Server

Timeline

PublishedJul 30

Latest updateMay 24

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages1 packages

▶NVDpowerdns/authoritative_server4.5.0 — 4.5.1

🔴Vulnerability Details

GHSA

GHSA-g5x7-wx2c-jqff: PowerDNS Authoritative Server 4↗2022-05-24

▶

OSV

CVE-2021-36754: PowerDNS Authoritative Server 4↗2021-07-30

▶

CVEList

CVE-2021-36754: PowerDNS Authoritative Server 4↗2021-07-27

▶

VulnCheck

powerdns authoritative_server Improper Restriction of Operations within the Bounds of a Memory Buffer↗2021

▶

💥Exploits & PoCs

Nuclei

PowerDNS Authoritative Server - Denial of Service

▶

📋Vendor Advisories

Debian

CVE-2021-36754: pdns - PowerDNS Authoritative Server 4.5.0 before 4.5.1 allows anybody to crash the pro...↗2021

▶