CVE-2018-1000003 Denial of service in n/a
A man-in-the-middle attacker can deny the existence of DNS data via packet replay due to improper input validation in PowerDNS DNSSEC validators.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2018-1000003?
CVE-2018-1000003 is a low-severity denial of service vulnerability in Powerdns Recursor, published on 22 Jan 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Improper input validation bugs in DNSSEC validators components in PowerDNS version 4.1.0 allow attacker in man-in-the-middle position to deny existence of some data in DNS via packet replay.
Weakness: CWE-20
Which versions are affected by CVE-2018-1000003?
It affects 1 product.
Linux distribution packages (1)
pdns-recursor SUSE:Package Hub 12 SP1 | All versions | 4.1.2-5.1 |
Products include Powerdns Recursor.
How do I fix CVE-2018-1000003?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2018-1000003 being exploited?
There is no known exploitation of CVE-2018-1000003 in the wild and no public exploit code.
Other vulnerabilities in Powerdns Recursor
- CVE-2009-4009 Memory corruption in n/a
- CVE-2020-10030 Memory corruption in n/a
- CVE-2025-59023 Crafted delegations or IP fragments can poison cached delegations in Recursor
- CVE-2025-59030 Insufficient validation of incoming notifies over TCP can lead to a denial of service in Recursor
- CVE-2023-22617 Denial of service in n/a
Sources
Also known as DEBIAN-CVE-2018-1000003, GHSA-vm3q-6vgq-8qhr, MGASA-2018-0252, openSUSE-SU-2018:0953-1.