Triggered crash on direct RRDP access
CVE-2023-0158

7.5HIGH

Key Information:

Vendor

Nlnet Labs

Status
Krill
Vendor
CVE Published:
17 January 2023

What is CVE-2023-0158?

NLnet Labs Krill features a built-in web server that directly exposes the RRDP repository content through the '/rrdp' endpoint. Prior to version 0.12.1, any direct query to an existing directory under '/rrdp/' led to the server crashing, instead of providing the expected RRDP file, such as '/rrdp/notification.xml'. If the '/rrdp' endpoint is publicly accessible, malicious actors can exploit this flaw, resulting in server downtime. Although the repository content remains intact, the consequent unavailability of the server poses serious operational issues, particularly if such attacks are orchestrated persistently without adequate countermeasures in place.

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Affected Version(s)

Krill <= 0.12.0

References

https://www.nlnetlabs.nl/downloads/krill/CVE-2023-0158.txt

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

We would like to thank user KittensAreDaBest on GitHub for the discovery and disclosure.
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