Unlimited transforms allowed for signed nodes
### Impact A malicious SAML payload can require transforms that consume significant system resources to process, thereby resulting in reduced or denied service. This would be an effective way to perform a denial-of-service attack. ### Patches This has been resolved in version 3.1.0. The resolution is to limit the number of allowable transforms to 2. ### References https://github.com/node-saml/passport-saml/pull/595
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describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2021-39171US | high7.5 | — | ||
Passport-SAML is a SAML 2.0 authentication provider for Passport, the Node.js authentication library. Prior to version 3.1.0, a malicious SAML payload can require transforms that c… | ||||
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references
External citations — patches, advisories, analysis.
- https://github.com/node-saml/passport-samlPACKAGE
- https://github.com/node-saml/passport-saml/commit/f1e00b64c21a725f545e675cd810bbaa435a3972WEB
- https://github.com/node-saml/passport-saml/pull/595WEB
- https://github.com/node-saml/passport-saml/security/advisories/GHSA-5379-r78w-42h2WEB
- https://nvd.nist.gov/vuln/detail/CVE-2021-39171ADVISORY
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