Lucene search

MitreCVE-2021-27884

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

CVE-2021-27884

2021-03-0123:15:13

CWE-330

mitre

web.nvd.nist.gov

cve

2021

27884

ymfe yapi

json web token

jwt

signing

node.js

nvd

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

AI Score

5.2

Confidence

High

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

Social References

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

AI Score

5.2

Confidence

High

EPSS

0.001

Percentile

27.1%

JSON

Related for CVE-2021-27884