Medium severity · published Jan 23, 2018
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…
5.3
CVSS
0.8%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.8% · higher than 57% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RE
Recursor · Powerdns
3.0 through 3.7.4; 4.0.0 through 4.0.6 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-15093
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-15093
Third Party Advisory
http://www.securityfocus.com/bid/101982
Mitigation
https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2017-06.html
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