The example code for the digest authentication functionality (http_authentication.rb) in Ruby on Rails before 2.3.3 defines an authenticate_or_request_with_http_digest block that returns nil instead of false when the user does not exist, which allows context-dependent attackers to bypass authentication for applications that are derived from this example by sending an invalid username without a password.

Threat-Mapped Scoring

Score: 0.0

Priority: Unclassified

EPSS

Score: 0.00403
Percentile: 0.60075

CVSS Scoring

Mapped CWE(s)

• CWE-287 : Improper Authentication

All CAPEC(s)

CAPEC(s) with Mapped TTPs

Mapped ATT&CK TTPs

• T1548 : Abuse Elevation Control Mechanism
  Kill Chain: privilege-escalation
• T1548 : Abuse Elevation Control Mechanism
  Kill Chain: privilege-escalation
• T1040 : Network Sniffing
  Kill Chain: credential-access
• T1185 : Browser Session Hijacking
  Kill Chain: collection
• T1550.001 : Application Access Token
  Kill Chain: defense-evasion
• T1563 : Remote Service Session Hijacking
  Kill Chain: lateral-movement
• T1134 : Access Token Manipulation
  Kill Chain: defense-evasion
• T1505.003 : Web Shell
  Kill Chain: persistence
• T1557 : Adversary-in-the-Middle
  Kill Chain: credential-access

Malware

APTs Threat Group Associations

Campaigns

Affected Products

• cpe:2.3:a:rubyonrails:ruby_on_rails:*:*:*:*:*:*:*:*
• cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
• cpe:2.3:o:apple:mac_os_x:10.5.8:*:*:*:*:*:*:*
• cpe:2.3:o:apple:mac_os_x_server:*:*:*:*:*:*:*:*
• cpe:2.3:o:apple:mac_os_x_server:10.5.8:*:*:*:*:*:*:*

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