CVE-2022-39304 ghinstallation returns app JWT in error responses

2022-12-2019:52:28

CWE-209

GitHub_M

www.cve.org

cve-2022-39304

ghinstallation

github apps

authentication

installation token

http request

response

debugging

short lived token

patch

version 2.0.0

5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

LOW

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

5.5 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

15.7%

JSON

ghinstallation provides transport, which implements http.RoundTripper to provide authentication as an installation for GitHub Apps. In ghinstallation version 1, when the request to refresh an installation token failed, the HTTP request and response would be returned for debugging. The request contained the bearer JWT for the App, and was returned back to clients. This token is short lived (10 minute maximum). This issue has been patched and is available in version 2.0.0.

CNA Affected

[
  {
    "vendor": "bradleyfalzon",
    "product": "ghinstallation",
    "versions": [
      {
        "version": "< 2.0.0",
        "status": "affected"
      }
    ]
  }
]