CVE-2021-22865
Published Apr 2, 2021
Last updated a year ago
Overview
- Description
- An improper access control vulnerability was identified in GitHub Enterprise Server that allowed access tokens generated from a GitHub App's web authentication flow to read private repository metadata via the REST API without having been granted the appropriate permissions. To exploit this vulnerability, an attacker would need to create a GitHub App on the instance and have a user authorize the application through the web authentication flow. The private repository metadata returned would be limited to repositories owned by the user the token identifies. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.0.4 and was fixed in versions 3.0.4, 2.22.10, 2.21.18. This vulnerability was reported via the GitHub Bug Bounty program.
- Source
- product-cna@github.com
- NVD status
- Modified
Social media
- Hype score
- Not currently trending
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 6.5
- Impact score
- 3.6
- Exploitability score
- 2.8
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
- Severity
- MEDIUM
CVSS 2.0
- Type
- Primary
- Base score
- 4.3
- Impact score
- 2.9
- Exploitability score
- 8.6
- Vector string
- AV:N/AC:M/Au:N/C:P/I:N/A:N
Weaknesses
- nvd@nist.gov
- NVD-CWE-Other
- product-cna@github.com
- CWE-285
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "83563454-A07F-4BB4-8372-C950C437CCA7",
"versionEndExcluding": "2.21.18"
},
{
"criteria": "cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "7CDD3874-DF16-4708-B490-B9837E8C1E84",
"versionEndExcluding": "2.22.10",
"versionStartIncluding": "2.22.0"
},
{
"criteria": "cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "A99BF524-7BF7-4DD9-845D-EF117D94D71F",
"versionEndExcluding": "3.0.4",
"versionStartIncluding": "3.0.0"
}
],
"operator": "OR"
}
]
}
]