CVE-2023-3915 Incorrect Execution-Assigned Permissions in GitLab

2023-09-0110:01:16

CWE-279

GitLab

www.cve.org

cve-2023-3915

gitlab

privilege escalation

service account

external user

group ownership

CVSS3

6.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

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

AI Score

Confidence

High

EPSS

0.002

Percentile

52.3%

JSON

An issue has been discovered in GitLab EE affecting all versions starting from 16.1 before 16.1.5, all versions starting from 16.2 before 16.2.5, all versions starting from 16.3 before 16.3.1. If an external user is given an owner role on any group, that external user may escalate their privileges on the instance by creating a service account in that group. This service account is not classified as external and may be used to access internal projects.

CNA Affected

[
  {
    "cpes": [
      "cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*"
    ],
    "defaultStatus": "unaffected",
    "product": "GitLab",
    "repo": "git://[email protected]:gitlab-org/gitlab.git",
    "vendor": "GitLab",
    "versions": [
      {
        "lessThan": "16.1.5",
        "status": "affected",
        "version": "16.1",
        "versionType": "semver"
      },
      {
        "lessThan": "16.2.5",
        "status": "affected",
        "version": "16.2",
        "versionType": "semver"
      },
      {
        "lessThan": "16.3.1",
        "status": "affected",
        "version": "16.3",
        "versionType": "semver"
      }
    ]
  }
]