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

6.5 Medium

CVSS3

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

7 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

30.1%

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

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