CVE-2023-0158 Triggered crash on direct RRDP access
Remote attackers can crash the Krill RPKI server by accessing specific RRDP directories, causing service unavailability.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-0158?
CVE-2023-0158 is a high-severity denial of service vulnerability in NLnet Labs Krill, published on 17 Jan 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
NLnet Labs Krill supports direct access to the RRDP repository content through its built-in web server at the "/rrdp" endpoint. Prior to 0.12.1 a direct query for any existing directory under "/rrdp/", rather than an RRDP file such as "/rrdp/notification.xml" as would be expected, causes Krill to crash. If the built-in "/rrdp" endpoint is exposed directly to the internet, then malicious remote parties can cause the publication server to crash. The repository content is not affected by this, but the availability of the server and repository can cause issues if this attack is persistent and is not mitigated.
Weakness: CWE-248
Which versions are affected by CVE-2023-0158?
It affects 1 product.
Products include Nlnetlabs Krill.
How do I fix CVE-2023-0158?
No fix has been published for CVE-2023-0158 yet. Limit exposure of the affected software until one is available.
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-2023-0158 being exploited?
There is no known exploitation of CVE-2023-0158 in the wild and no public exploit code.
Sources
Also known as GHSA-4rq4-8r9h-8884.