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Excessive privileges

Description

A user with access to the application can generate an error within the application to gain access to the SharePoint platform. From which they can create groups with excessive privileges, to use functions that were not possible to access initially. Also, they can modify or remove permissions that other users or groups have on the application and share content with users who initially did not have access.

Impact

  • Create groups within the application with excessive permissions, to use functions to which you did not have access initially.
  • Edit or remove permissions that other users or groups have on the application.
  • Share application content with unauthorized users.

Recommendation

Configure the application so that users cannot modify their permissions.

Threat

Attacker with access to the application from the Internet.

Expected Remediation Time

⌚ 120 minutes.

Score

Default score using CVSS 3.1. It may change depending on the context of the src.

Base

  • Attack vector: N
  • Attack complexity: L
  • Privileges required: L
  • User interaction: N
  • Scope: C
  • Confidentiality: L
  • Integrity: H
  • Availability: L

Temporal

  • Exploit code madurity: X
  • Remediation level: X
  • Report confidence: X

Result

  • Vector string: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:L/E:X/RL:X/RC:X
  • Score:
    • Base: 9.1
    • Temporal: 9.1
  • Severity:
    • Base: Critical
    • Temporal: Critical

Score 4.0

Default score using CVSS 4.0 . It may change depending on the context of the src.

Base 4.0

  • Attack vector: N
  • Attack complexity: L
  • Attack Requirements: N
  • Privileges required: L
  • User interaction: N
  • Confidentiality (VC): L
  • Integrity (VI): H
  • Availability (VA): L
  • Confidentiality (SC): N
  • Integrity (SI): N
  • Availability (SA): N

Threat 4.0

  • Exploit madurity: X

Result 4.0

  • Vector string: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N/E:X
  • Score:
    • CVSS-BT: 7.2
  • Severity:
    • CVSS-BT: High

Requirements

Fixes

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