Lucene search

CloudflareCVE-2021-3909

HistoryNov 11, 2021 - 10:15 p.m.

CVE-2021-3909

2021-11-1122:15:07

CWE-400

cloudflare

web.nvd.nist.gov

octorpki

cve-2021-3909

dos attack

slowloris

security vulnerability

nvd

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

AI Score

8.3

Confidence

High

EPSS

0.002

Percentile

61.0%

JSON

OctoRPKI does not limit the length of a connection, allowing for a slowloris DOS attack to take place which makes OctoRPKI wait forever. Specifically, the repository that OctoRPKI sends HTTP requests to will keep the connection open for a day before a response is returned, but does keep drip feeding new bytes to keep the connection alive.

Affected configurations

Nvd

Node

cloudflareoctorpkiRange<1.3.0

Node

debiandebian_linuxMatch11.0

VendorProductVersionCPE
cloudflareoctorpki*cpe:2.3:a:cloudflare:octorpki:*:*:*:*:*:*:*:*
debiandebian_linux11.0cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
cloudflare	octorpki	*	cpe:2.3:a:cloudflare:octorpki::::::::
debian	debian_linux	11.0	cpe:2.3:o:debian:debian_linux:11.0:::::::*

CNA Affected

[
  {
    "product": "octorpki",
    "vendor": "Cloudflare",
    "versions": [
      {
        "lessThan": "1.4.0",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  }
]