CVE-2021-29455

Grassroot Platform is an application to make it faster, cheaper and easier to persistently organize and mobilize people in low-income communities. Grassroot Platform before master deployment as of 2021-04-16 did not properly verify the signature of JSON Web Tokens when refreshing an existing JWT. This allows to forge a valid JWT. The problem has been patched in version 1.3.1 by deprecating the JWT refresh function, which was an overdue deprecation regardless (the "refresh" flow is no longer used).

CVSS v3 7.5 HIGH
CVSS v2.0 5.0 MEDIUM

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://github.com/grassrootza/grassroot-platform/	Product Third Party Advisory
https://github.com/grassrootza/grassroot-platform/commit/a2e6e885f8183a066d938cf909fd813a7af7d67f	Patch Third Party Advisory
https://github.com/grassrootza/grassroot-platform/security/advisories/GHSA-f65w-6xw8-6734	Third Party Advisory
https://github.com/grassrootza/grassroot-platform/	Product Third Party Advisory
https://github.com/grassrootza/grassroot-platform/commit/a2e6e885f8183a066d938cf909fd813a7af7d67f	Patch Third Party Advisory
https://github.com/grassrootza/grassroot-platform/security/advisories/GHSA-f65w-6xw8-6734	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:grassroot:grassroot_platform:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2021-04-19 19:15

Updated : 2024-11-21 06:01

NVD link : CVE-2021-29455

Mitre link : CVE-2021-29455

CVE.ORG link : CVE-2021-29455

JSON object : View

Products Affected

grassroot

grassroot_platform

CWE

CWE-347

Improper Verification of Cryptographic Signature

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