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cve[email protected]CVE-2021-22865
HistoryApr 02, 2021 - 6:15 p.m.

CVE-2021-22865

2021-04-0218:15:21
CWE-285
[email protected]
web.nvd.nist.gov
22
cve-2021-22865
github
enterprise server
access control
vulnerability
unauthorized access
rest api
private repository metadata
github app
authentication
github bug bounty program

4.3 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

0.001 Low

EPSS

Percentile

50.6%

JSON

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.

Affected configurations

Vulners
NVD
Node
githubenterprise_serverRange3.0–3.0.4
OR
githubenterprise_serverRange2.22–2.22.10
OR
githubenterprise_serverRange2.21–2.21.18
VendorProductVersionCPE
githubenterprise_server*cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:*
githubenterprise_server*cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:*
githubenterprise_server*cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:*

CNA Affected

[
  {
    "product": "GitHub Enterprise Server",
    "vendor": "GitHub",
    "versions": [
      {
        "lessThan": "3.0.4",
        "status": "affected",
        "version": "3.0",
        "versionType": "custom"
      },
      {
        "lessThan": "2.22.10",
        "status": "affected",
        "version": "2.22",
        "versionType": "custom"
      },
      {
        "lessThan": "2.21.18",
        "status": "affected",
        "version": "2.21",
        "versionType": "custom"
      }
    ]
  }
]

Related

cvelist 1
nvd 1
prion 1
cvelist
cvelist
CVE-2021-22865 Improper access control in GitHub Enterprise Server leading to unauthorized read access to private repository metadata
2021-04-02 17:25:14
nvd
nvd
CVE-2021-22865
2021-04-02 18:15:21
prion
prion
Improper access control
2021-04-02 18:15:00

4.3 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

0.001 Low

EPSS

Percentile

50.6%

JSON
Related for CVE-2021-22865
cvelist1nvd1prion1