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Authentication mechanism absence or evasion - Redirect

Description

An attacker can gain access to the application by knowing a valid username by changing the redirect with which the server responds.

Impact

  • Bypass the authentication process by changing the page redirection and thus gain access to the applications functionality.
  • Know a valid user.
  • Change the redirect and access the application.

Recommendation

Put in place for every resource with business-critical functionality a strong authentication process and ensure that every user attempting to access it is logged in.

Threat

Anonymous attacker from the Internet.

Expected Remediation Time

⌚ 60 minutes.

Score

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

Base

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

Temporal

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

Result

  • Vector string: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:X/RL:X/RC:X
  • Score:
    • Base: 8.1
    • Temporal: 8.1
  • Severity:
    • Base: High
    • Temporal: High

Score 4.0

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

Base 4.0

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

Threat 4.0

  • Exploit madurity: X

Result 4.0

  • Vector string: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X
  • Score:
    • CVSS-BT: 8.6
  • Severity:
    • CVSS-BT: High

Requirements

Fixes

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