CVE-2021-22862
CVSS V2 Medium 4
CVSS V3 Medium 6.5
Description
An improper access control vulnerability was identified in GitHub Enterprise Server that allowed an authenticated user with the ability to fork a repository to disclose Actions secrets for the parent repository of the fork. This vulnerability existed due to a flaw that allowed the base reference of a pull request to be updated to point to an arbitrary SHA or another pull request outside of the fork repository. By establishing this incorrect reference in a PR, the restrictions that limit the Actions secrets sent a workflow from forks could be bypassed. This vulnerability affected GitHub Enterprise Server version 3.0.0, 3.0.0.rc2, and 3.0.0.rc1. This vulnerability was reported via the GitHub Bug Bounty program.
Overview
- CVE ID
- CVE-2021-22862
- Assigner
- product-cna@github.com
- Vulnerability Status
- Analyzed
- Published Version
- 2021-03-03T04:15:13
- Last Modified Date
- 2022-10-25T14:03:18
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:github:github:3.0.0:-:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:github:github:3.0.0:rc1:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:github:github:3.0.0:rc2:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:S/C:P/I:N/A:N
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- SINGLE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- NONE
- Availability Impact
- NONE
- Base Score
- 4
- Severity
- MEDIUM
- Exploitability Score
- 8
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- NONE
- Base Score
- 6.5
- Base Severity
- MEDIUM
- Exploitability Score
- 2.8
- Impact Score
- 3.6
References
| Reference URL | Reference Tags |
|---|---|
| https://docs.github.com/en/enterprise-server@3.0/admin/release-notes#3.0.1 | Release Notes Vendor Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-22862 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-22862 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 07:20:36 | Added to TrackCVE | |||
| 2022-12-05 23:01:50 | 2021-03-03T04:15Z | 2021-03-03T04:15:13 | CVE Published Date | updated |
| 2022-12-05 23:01:50 | 2022-10-25T14:03:18 | CVE Modified Date | updated | |
| 2022-12-05 23:01:50 | Analyzed | Vulnerability Status | updated |