High severity · published Nov 11, 2021
CVE-2021-3910
OctoRPKI crashes when encountering a repository that returns an invalid ROA (just an encoded NUL (\0) character)
7.5
CVSS
1.2%
EPSS
No
On KEV
Description
OctoRPKI crashes when encountering a repository that returns an invalid ROA (just an encoded NUL (\0) character).
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.2% · higher than 68% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
11.0 · source: NVD
OC
Octorpki · Cloudflare
before 1.4.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-3910
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-3910
Third Party Advisory
https://github.com/cloudflare/cfrpki/security/advisories/GHSA-5mxh-2qfv-4g7j
Third Party Advisory
https://www.debian.org/security/2022/dsa-5041
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9.8
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OctoRPKI crash when maximum iterations number is reached
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CVE-2021-3909
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CVE-2021-3908
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
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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