Vulnerability in Powerdns Authoritative
CVE-2016-5427
PowerDNS (aka pdns) Authoritative Server before 3.4.10 does not properly handle a . (dot) inside labels, which allows remote attackers to cause a denial of service (backend CPU consumption) via a crafted DNS query.
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: 0.630 (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: 0.630 · newest: 0.630 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/PowerDNS/pdns/commit/881b5b03a590198d03008e4200dd00cc537712f3
- www.securitytracker.com/id/1036761 (vdb-entry)
- www.debian.org/security/2016/dsa-3664 (vendor-advisory)
- www.securityfocus.com/bid/92917 (vdb-entry)
- www.openwall.com/lists/oss-security/2016/09/09/3 (mailing-list, Release Notes)
- doc.powerdns.com/md/security/powerdns-advisory-2016-01/ (Vendor Advisory)
Frequently asked questions
- What is CVE-2016-5427?
- CVE-2016-5427 is a high-severity vulnerability in Powerdns Authoritative, classified under CWE-399. CVSS score: 7.5/10. Published 2016-09-21.
- How severe is CVE-2016-5427?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2016-5427 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.