CVE Vulnerability

CVE-2020-7787

This affects all versions of package react-adal. It is possible for a specially crafted JWT token and request URL can cause the nonce, session and refresh values to be incorrectly validated, causing the application to treat an attacker-generated JWT token as authentic. The logical defect is caused by how the nonce, session and refresh values are stored in the browser local storage or session storage. Each key is automatically appended by ||. When the received nonce and session keys are generated, the list of values is stored in the browser storage, separated by ||, with || always appended to the end of the list. Since || will always be the last 2 characters of the stored values, an empty string ("") will always be in the list of the valid values. Therefore, if an empty session parameter is provided in the callback URL, and a specially-crafted JWT token contains an nonce value of "" (empty string), then adal.js will consider the JWT token as authentic.

5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

Scope

8.2 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://snyk.io/vuln/SNYK-JS-REACTADAL-1018907 Exploit Third Party Advisory
https://github.com/salvoravida/react-adal/pull/115 Exploit Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:react-adal_project:react-adal:*:*:*:*:*:node.js:*:*
Information

Published : 2020-12-09 05:15

Updated : 2020-12-11 05:01

NVD link : CVE-2020-7787

Mitre link : CVE-2020-7787

Products Affected
No products.
CWE
CWE-287