CVE-2021-3761 (GCVE-0-2021-3761)

Vulnerability from cvelistv5 – Published: 2021-09-09 14:05 – Updated: 2024-09-17 02:56
VLAI
Title
OctoRPKI lacks contextual out-of-bounds check when validating RPKI ROA maxLength values
Summary
Any CA issuer in the RPKI can trick OctoRPKI prior to 1.3.0 into emitting an invalid VRP "MaxLength" value, causing RTR sessions to terminate. An attacker can use this to disable RPKI Origin Validation in a victim network (for example AS 13335 - Cloudflare) prior to launching a BGP hijack which during normal operations would be rejected as "RPKI invalid". Additionally, in certain deployments RTR session flapping in and of itself also could cause BGP routing churn, causing availability issues.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • Missing out of bounds check
Assigner
References
Impacted products
Vendor Product Version
Cloudflare octorpki Affected: unspecified , < 1.3.0 (custom)
Create a notification for this product.
Date Public
2021-09-03 00:00
Credits
Job Snijders
Show details on NVD website
To clipboard 

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