Infinite certificate chain depth results in OctoRPKI running forever

Description

OctoRPKI (github.com/cloudflare/cfrpki/cmd/octorpki) does not limit the depth of a certificate chain, allowing for a CA to create children in an ad-hoc fashion, thereby making tree traversal never end.

For more information

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Basic information

Type
reviewed
Severity
medium
Advisory on GitHub
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Repository advisory
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Source code
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Published (advisory)
2021-11-10 20:38:53 UTC
Updated
2023-10-02 15:58:04 UTC
GitHub reviewed
2021-11-10 18:18:55 UTC
NVD published
2021-11-11

EPSS Score

Score Percentile
0.29% 51.75%

CVSS Scores

Base score Version Severity Vector
5.9 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.

Identifiers

CWEs

CWE id Name
CWE-400 Uncontrolled Resource Consumption
CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop')

Credits

  • andrewpollock (analyst)

Affected packages (1)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem Package Vulnerable range First patched Vulnerable functions
go github.com/cloudflare/cfrpki < 1.4.0 1.4.0

References

cvelogic Threat Intelligence