CVE-2021-36754

high-risk
Published 2021-07-30

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.

Do I need to act?

!
81.3% chance of exploitation in next 30 days
EPSS score — higher than 19% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / LOW complexity

Affected Products (1)

Authoritative Server

Affected Vendors

Powerdns

References (6)

Mailing List http://www.openwall.com/lists/oss-security/2021/07/26/2
Vendor Advisory https://doc.powerdns.com/authoritative/security-advisories/index.html
Vendor Advisory https://doc.powerdns.com/authoritative/security-advisories/powerdns-advisory-202...
Mailing List http://www.openwall.com/lists/oss-security/2021/07/26/2
Vendor Advisory https://doc.powerdns.com/authoritative/security-advisories/index.html
Vendor Advisory https://doc.powerdns.com/authoritative/security-advisories/powerdns-advisory-202...
51
/ 100
high-risk
Severity 26/34 · High
Exploitability 20/34 · Moderate
Exposure 5/34 · Minimal