Resource exhaustion in Powerdns Authoritative Server
CVE-2016-6172
PowerDNS (aka pdns) Authoritative Server before 4.0.1 allows remote primary DNS servers to cause a denial of service (memory exhaustion and secondary DNS server crash) via a large (1) AXFR or (2) IXFR response.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.038 (89.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 89.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.038 · newest: 0.038 · change: 0.000
Affected products
- Powerdns Authoritative Server
- openSUSE Leap — versions 42.1
- openSUSE — versions 13.2
Weakness classification (CWE)
References
- doc.powerdns.com/md/changelog/ (Release Notes)
- www.debian.org/security/2016/dsa-3664 (vendor-advisory)
- www.securitytracker.com/id/1036242 (vdb-entry)
- www.openwall.com/lists/oss-security/2016/07/06/3 (mailing-list, Mailing List)
- github.com/PowerDNS/pdns/issues/4128 (Issue Tracking)
- github.com/PowerDNS/pdns/issues/4133 (Issue Tracking)
- www.securityfocus.com/bid/91678 (vdb-entry)
- lists.dns-oarc.net/pipermail/dns-operations/2016-July/015058.html (mailing-list, Mailing List, Third Party Advisory)
- github.com/PowerDNS/pdns/pull/4134 (Issue Tracking)
- lists.opensuse.org/opensuse-updates/2016-08/msg00085.html (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2016-6172?
- CVE-2016-6172 is a medium-severity vulnerability in Powerdns Authoritative Server, classified under Uncontrolled Resource Consumption. CVSS score: 6.8/10. Published 2016-09-26.
- How severe is CVE-2016-6172?
- Medium severity. CVSS v3 base score is 6.8 out of 10.