CVE-2016-7072

low-risk

Published 2018-09-10

An issue has been found in PowerDNS Authoritative Server before 3.4.11 and 4.0.2 allowing a remote, unauthenticated attacker to cause a denial of service by opening a large number of TCP connections to the web server. If the web server runs out of file descriptors, it triggers an exception and terminates the whole PowerDNS process. While it's more complicated for an unauthorized attacker to make the web server run out of file descriptors since its connection will be closed just after being accepted, it might still be possible.

Do I need to act?

0.03% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 5.3/10 Medium

NETWORK / LOW complexity

Affected Products (2)

Authoritative

Debian Linux

Affected Vendors

Debian Powerdns

References (6)

Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-7072

Vendor Advisory https://doc.powerdns.com/md/security/powerdns-advisory-2016-03/

Third Party Advisory https://www.debian.org/security/2017/dsa-3764

Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-7072

Vendor Advisory https://doc.powerdns.com/md/security/powerdns-advisory-2016-03/

Third Party Advisory https://www.debian.org/security/2017/dsa-3764

/ 100

low-risk

Severity 21/34 · High

Exploitability 0/34 · Minimal

Exposure 7/34 · Low