CVE-2020-7777
Vulnerability Scoring
Attack Complexity Details
- Attack Complexity: Low Impact
- Attack Vector: NETWORK
- Privileges Required: HIGH IMPACT
- Scope: UNCHANGED
- User Interaction: NONE
CIA Impact Definition
- Confidentiality: HIGH IMPACT
- Integrity: HIGH IMPACT
- Availability: HIGH IMPACT
CVE-2020-7777 Vulnerability Summary
This affects all versions of package jsen. If an attacker can control the schema file, it could run arbitrary JavaScript code on the victim machine. In the module description and README file there is no mention about the risks of untrusted schema files, so I assume that this is applicable. In particular the required field of the schema is not properly sanitized. The resulting string that is build based on the schema definition is then passed to a Function.apply();, leading to an Arbitrary Code Execution.
Access Complexity Graph for CVE-2020-7777
Impact Analysis for CVE-2020-7777
CVE-2020-7777: Detailed Information and External References
EPSS
0.00196
EPSS %
0.57767
References
0.00196
- https://github.com/bugventure/jsen/blob/master/lib/jsen.js%23L875
- https://snyk.io/vuln/SNYK-JS-JSEN-1014670
- https://github.com/bugventure/jsen/blob/master/lib/jsen.js%23L875
- https://snyk.io/vuln/SNYK-JS-JSEN-1014670
CWE
NVD-CWE-noinfo
Vulnerable Configurations
-
cpe:2.3:a:jsen_project:jsen:*:*:*:*:*:node.js:*:*
cpe:2.3:a:jsen_project:jsen:*:*:*:*:*:node.js:*:*
CVSS3 Source
report@snyk.io
CVSS3 Type
Secondary
CVSS3 Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
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