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PowerDNS Authoritative Server < 3.4.11 / 4.0 < 4.0.2 DoS Vulnerabilities

Information

Severity

Severity

Medium

Family

Family

Denial of Service

CVSSv2 Base

CVSSv2 Base

5.0

CVSSv2 Vector

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Solution Type

Solution Type

Vendor Patch

Created

Created

4 years ago

Modified

Modified

3 years ago

Summary

An issue has been found in PowerDNS Authoritative Server 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.

Affected Software

Affected Software

PowerDNS Authoritative Server version 3.4.10, 4.0.1 and prior.

Detection Method

Detection Method

Checks if a vulnerable version is present on the target host.

Solution

Solution

Upgrade to version 3.4.11, 4.0.2 or later.

Common Vulnerabilities and Exposures (CVE)