CVE-2009-2422

Severity CVSS v4.0:

Pending analysis

Type:

CWE-287 Authentication Issues

Publication date:

10/07/2009

Last modified:

09/04/2025

Description

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.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 9.80 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x

9.80

Severity 3.x

CRITICAL

Vector 2.0

AV:N/AC:L/Au:N/C:P/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): Physical

Base Score 2.0

7.50

Severity 2.0

HIGH

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:rubyonrails:ruby_on_rails::::::::		2.3.3 (excluding)
cpe:2.3:o:apple:mac_os_x::::::::	10.6.0 (including)	10.6.3 (excluding)
cpe:2.3:o:apple:mac_os_x:10.5.8:::::::*
cpe:2.3:o:apple:mac_os_x_server::::::::	10.6.0 (including)	10.6.3 (excluding)
cpe:2.3:o:apple:mac_os_x_server:10.5.8:::::::*

To consult the complete list of CPE names with products and versions, see this page

CVE-2009-2422

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools