// For flags

CVE-2024-45409

The Ruby SAML library vulnerable to a SAML authentication bypass via Incorrect XPath selector

Severity Score

10.0
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

2
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Attend
*SSVC
Descriptions

The Ruby SAML library is for implementing the client side of a SAML authorization. Ruby-SAML in <= 12.2 and 1.13.0 <= 1.16.0 does not properly verify the signature of the SAML Response. An unauthenticated attacker with access to any signed saml document (by the IdP) can thus forge a SAML Response/Assertion with arbitrary contents. This would allow the attacker to log in as arbitrary user within the vulnerable system. This vulnerability is fixed in 1.17.0 and 1.12.3.

It was discovered that Ruby SAML did not properly validate SAML responses. An unauthenticated attacker could use this vulnerability to log in as an arbitrary user. This issue only affected Ubuntu 16.04 LTS. It was discovered that Ruby SAML incorrectly utilized the results of XML DOM traversal and canonicalization APIs. An unauthenticated attacker could use this vulnerability to log in as an arbitrary user. This issue only affected Ubuntu 16.04 LTS.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:Attend
Exploitation
Poc
Automatable
Yes
Tech. Impact
Total
* Organization's Worst-case Scenario
Timeline
  • 2024-08-28 CVE Reserved
  • 2024-09-10 CVE Published
  • 2024-10-07 First Exploit
  • 2024-11-11 CVE Updated
  • 2025-02-21 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-347: Improper Verification of Cryptographic Signature
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
SAML-Toolkits
Search vendor "SAML-Toolkits"
 Ru
Search vendor "SAML-Toolkits" for product "Ru"
 < 1.12.3
Search vendor "SAML-Toolkits" for product "Ru" and version " < 1.12.3"
en
Affected
SAML-Toolkits
Search vendor "SAML-Toolkits"
 Ru
Search vendor "SAML-Toolkits" for product "Ru"
 >= 1.13.0 < 1.17.0
Search vendor "SAML-Toolkits" for product "Ru" and version " >= 1.13.0 < 1.17.0"
en
Affected