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[email protected]NVD:CVE-2021-27884

HistoryMar 01, 2021 - 11:15 p.m.

CVE-2021-27884

2021-03-0123:15:13

CWE-330

[email protected]

web.nvd.nist.gov

weak jwt secret

ymfe yapi

token recreation

node.js

CVSS2

3.6

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

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

CVSS3

5.1

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

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

EPSS

0.001

Percentile

27.1%

JSON

Weak JSON Web Token (JWT) signing secret generation in YMFE YApi through 1.9.2 allows recreation of other users’ JWT tokens. This occurs because Math.random in Node.js is used.

Affected configurations

Nvd

Node

ymfeyapiRange≤1.9.2

VendorProductVersionCPE
ymfeyapi*cpe:2.3:a:ymfe:yapi:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
ymfe	yapi	*	cpe:2.3:a:ymfe:yapi::::::::

References

github.com/YMFE/yapi/issues/2117

securitylab.github.com/advisories/GHSL-2020-228-YMFE-yapi

CVSS2

3.6

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

NONE

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

CVSS3

5.1

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

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

EPSS

0.001

Percentile

27.1%

JSON

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