NULL pointer dereference in Powerdns Pdns-Recursor
CVE-2017-15120
An issue has been found in the parsing of authoritative answers in PowerDNS Recursor before 4.0.8, leading to a NULL pointer dereference when parsing a specially crafted answer containing a CNAME of a different class than IN. An unauthenticated remote attacker could cause a denial of service.
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: 0.514 (98.9th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 98.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.518 · newest: 0.514 · change: -0.004
Affected products
- Powerdns Pdns-Recursor — versions 4.0.8
- Powerdns Recursor
- Debian Linux — versions 8.0, 9.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
- doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2017-08.html (Patch, Vendor Advisory)
- www.debian.org/security/2017/dsa-4063 (vendor-advisory, Third Party Advisory)
- seclists.org/oss-sec/2017/q4/382 (mailing-list, Patch, Mailing List, Third Party Advisory)
- www.securityfocus.com/bid/106335 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2017-15120?
- CVE-2017-15120 is a high-severity vulnerability in Powerdns Pdns-Recursor, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2018-07-27.
- How severe is CVE-2017-15120?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2017-15120 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.