Integer overflow in Powerdns Authoritative
CVE-2016-2120
An issue has been found in PowerDNS Authoritative Server versions up to and including 3.4.10, 4.0.1 allowing an authorized user to crash the server by inserting a specially crafted record in a zone under their control then sending a DNS query for that record. The issue is due to an integer overflow when checking if the content of the record matches the expected size, allowing an attacker to cause a read past the buffer boundary.
Vulnerability class: Integer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.020 (79.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 79.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.020 · newest: 0.020 · change: 0.000
Affected products
- Powerdns Authoritative
- [Unknown] Pdns — versions up to and including 3.4.10, up to and including 4.0.1
- Debian Linux — versions 8.0
Weakness classification (CWE)
References
- www.debian.org/security/2017/dsa-3764 (vendor-advisory, Third Party Advisory)
- bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2016-2120?
- CVE-2016-2120 is a high-severity vulnerability in Powerdns Authoritative, classified under Integer Overflow or Wraparound. CVSS score: 7.5/10. Published 2018-11-01.
- How severe is CVE-2016-2120?
- High severity. CVSS v3 base score is 7.5 out of 10.