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CVE-2024-45409

Onelogin Ruby-saml vulnerability

10.0 CRITICALEPSS 10.7%
  1. Published10 Sept 2024

Description

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

Affected products

GitLab≥ 17.0.0 < 17.0.8 · ≥ 17.1.0 < 17.1.8 · ≥ 17.2.0 < 17.2.7 · ≥ 17.3.0 < 17.3.3
Omniauth Saml2.0.0 · 2.1.0 · ≤ 1.10.3
Onelogin Ruby-saml≥ 1.13.0 < 1.17.0 · < 1.12.3

Remediation

Fixed in
GitLab≥ 17.0.8
Onelogin Ruby-saml≥ 1.17.0

Frequently asked

Is CVE-2024-45409 being actively exploited?

CVE-2024-45409 is not in the CISA KEV catalog. Its EPSS exploit probability is 10.7%.

How severe is CVE-2024-45409?

CVE-2024-45409 has a CVSS 3.1 base score of 10.0, rated critical. EPSS estimates a 10.7% probability of exploitation.

Which products are affected by CVE-2024-45409?

Affected products include GitLab, Omniauth Saml, Onelogin Ruby-saml.

How do I fix CVE-2024-45409?

Upgrade affected software to a fixed version, for example GitLab 17.0.8, Onelogin Ruby-saml 1.17.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2024-45409 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.