Vulnerability in Nlnet Labs Krill
CVE-2023-0158
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.
EPSS: 0.007 (49.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Nlnet Labs Krill — versions unspecified
- Nlnetlabs Krill
Weakness classification (CWE)
Public proof-of-concept exploits
References
- sep@nlnetlabs.nl (Mitigation, Vendor Advisory)
Frequently asked questions
- What is CVE-2023-0158?
- CVE-2023-0158 is a high-severity vulnerability in Nlnet Labs Krill, classified under CWE-248. CVSS score: 7.5/10. Published 2023-01-17.
- How severe is CVE-2023-0158?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2023-0158 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.