THREATPORT/VULNERABILITY/CVE-2024-45409
CRITICAL SEVERITY

CVE-2024-45409

Ruby Saml vulnerability

CVSS
10.0
EPSS
10.7%
EPSS pct
95th
Exploited
No known
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.
Affected vendor
Onelogin
Affected product
Ruby Saml
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
Weakness type (CWE)
  • CWE-347 — Improper Verification of Cryptographic Signature
Published
2024-09-10

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity.

Its EPSS score of 10.7% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 95% of all scored CVEs.

Check your external exposure to CVE-2024-45409

  • Confirm whether Onelogin Ruby Saml is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2024-45409.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2024-45409

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