Buffer overflow in Powerdns Authoritative Server
CVE-2021-36754
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.649 (99.2th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 99.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.649 · newest: 0.649 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- doc.powerdns.com/authoritative/security-advisories/index.html (Vendor Advisory)
- www.openwall.com/lists/oss-security/2021/07/26/2 (mailing-list, Mailing List, Third Party Advisory)
- doc.powerdns.com/authoritative/security-advisories/powerdns-advisory-2021-01.ht… (Vendor Advisory)
Frequently asked questions
- What is CVE-2021-36754?
- CVE-2021-36754 is a high-severity vulnerability in Powerdns Authoritative Server, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.5/10. Published 2021-07-30.
- How severe is CVE-2021-36754?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-36754 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.