PT-2019-3470 · Powerdns+2 · Powerdns Authoritative Server+2
Gert Van Dijk
·
Publicado
2019-01-21
·
Atualizado
2024-06-15
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CVE-2019-10162
CVSS v2.0
7.8
Alta
| Vetor | AV:N/AC:L/Au:N/C:N/I:N/A:C |
Name of the Vulnerable Software and Affected Versions
PowerDNS Authoritative Server versions prior to 4.1.10
PowerDNS Authoritative Server versions prior to 4.0.8
Description
The issue is related to a lack of authorization mechanism in the PowerDNS DNS server's syntax analysis function. This can be exploited by a remote attacker to cause a denial of service when the server looks up NS/A/AAAA records. The problem occurs because the Authoritative Server exits when it encounters a parsing error while looking up the NS/A/AAAA records it is about to use for an outgoing notify.
Recommendations
For PowerDNS Authoritative Server versions prior to 4.1.10, update to version 4.1.10 or later to resolve the issue.
For PowerDNS Authoritative Server versions prior to 4.0.8, update to version 4.0.8 or later to resolve the issue.
As a temporary workaround, consider restricting access to the MASTER type zone to minimize the risk of exploitation.
Correção
Improper Authorization
Resource Exhaustion
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Identificadores relacionados
Produtos afetados
Alt Linux
Powerdns Authoritative Server
Suse