Resource exhaustion in PowerDNS

1) Resource exhaustion

EUVDB-ID: #VU32013

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-10203

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

The vulnerability allows a remote authenticated user to perform service disruption.

PowerDNS Authoritative daemon , pdns versions 4.0.x before 4.0.9, 4.1.x before 4.1.11, exiting when encountering a serial between 2^31 and 2^32-1 while trying to notify a slave leads to DoS.

Mitigation

Install update from vendor's website.

Vulnerable software versions

PowerDNS: 4.0.0 - 4.1.10

CPE2.3

• cpe:2.3:a:powerdns_com_b_v:powerdns:4.0.0:*:*:*:*:*:*:
• cpe:2.3:a:powerdns_com_b_v:powerdns:4.0.1:*:*:*:*:*:*:
• cpe:2.3:a:powerdns_com_b_v:powerdns:4.0.2:*:*:*:*:*:*:

External links

http://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-10203
http://doc.powerdns.com/authoritative/security-advisories/powerdns-advisory-2019-06.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.