Improper input validation in Powerdns Recursor
CVE-2017-15093
When api-config-dir is set to a non-empty value, which is not the case by default, the API in PowerDNS Recursor 4.x up to and including 4.0.6 and 3.x up to and including 3.7.4 allows an authorized user to update the Recursor's ACL by adding and removing netmasks, and to configure forward zones. It was discovered that the new netmask and IP addresses of forwarded zones were not sufficiently validated, allowing an authenticated user to inject new configuration directives into the Recursor's configuration.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.008 (55.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 55.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
- Powerdns Recursor — versions 3.x up to and including 3.7.4, 4.x up to and including 4.0.6
- Powerdns Recursor
Weakness classification (CWE)
References
- www.securityfocus.com/bid/101982 (VDB Entry, Third Party Advisory, vdb-entry)
- doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2017-06.html (Patch, Mitigation, Vendor Advisory)
Frequently asked questions
- What is CVE-2017-15093?
- CVE-2017-15093 is a medium-severity vulnerability in Powerdns Recursor, classified under Improper Input Validation. CVSS score: 5.3/10. Published 2018-01-23.
- How severe is CVE-2017-15093?
- Medium severity. CVSS v3 base score is 5.3 out of 10.