CVE-2021-3761 (GCVE-0-2021-3761)
Vulnerability from cvelistv5
Published
2021-09-09 14:05
Modified
2024-09-17 02:56
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- Missing out of bounds check
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.
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
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Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Cloudflare | octorpki |
Version: unspecified < 1.3.0 |
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"url": "https://github.com/cloudflare/cfrpki/security/advisories/GHSA-c8xp-8mf3-62h9"
},
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"vendor": "Cloudflare",
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}
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"datePublished": "2021-09-09T14:05:09.349Z",
"dateReserved": "2021-09-01T00:00:00.000Z",
"dateUpdated": "2024-09-17T02:56:31.062Z",
"state": "PUBLISHED"
},
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}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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