Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)
User Interaction
None
Privileges Required
None
Attack Vector
Network
0

CVE-2020-8277

Disclosure Date: November 19, 2020 •
CVE-2020-8277 CVSS v3 Base Score: 7.5
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Description

A Node.js application that allows an attacker to trigger a DNS request for a host of their choice could trigger a Denial of Service in versions < 15.2.1, < 14.15.1, and < 12.19.1 by getting the application to resolve a DNS record with a larger number of responses. This is fixed in 15.2.1, 14.15.1, and 12.19.1.

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CVSS V3 Severity and Metrics
Base Score:
7.5 High
Impact Score:
3.6
Exploitability Score:
3.9
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
None
Integrity (I):
None
Availability (A):
High

General Information

Offensive Application
Unknown
Utility Class
Unknown
Ports
Unknown
OS
Unknown
Vulnerable Versions
https://github.com/nodejs/node Fixed in 15.2.1, 14.15.1, 12.19.1
Prerequisites
Unknown
Discovered By
Unknown
PoC Author
Unknown
Metasploit Module
Unknown
Reporter
Unknown

Vendors

  • c-ares project,
  • fedoraproject,
  • nodejs,
  • oracle

Products

  • blockchain platform,
  • c-ares,
  • fedora 32,
  • fedora 33,
  • graalvm 19.3.4,
  • graalvm 20.3.0,
  • jd edwards enterpriseone tools,
  • mysql cluster,
  • node.js,
  • retail xstore point of service 16.0.6,
  • retail xstore point of service 17.0.4,
  • retail xstore point of service 18.0.3,
  • retail xstore point of service 19.0.2
Technical Analysis