PT-2021-22429 · Unknown · Passport-Saml

Pp-Ps · Published 2021-08-27 · Updated 2021-09-07 · CVE-2021-39171

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Name of the Vulnerable Software and Affected Versions Passport-SAML versions prior to 3.1.0

Description 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.

Recommendations For versions prior to 3.1.0, update to version 3.1.0 to resolve the issue by limiting the number of allowable transforms to 2. As a temporary workaround, consider restricting the processing of SAML payloads to minimize the risk of exploitation.

Fix

Resource Exhaustion

Weakness Enumeration

CWE-400

Related Identifiers

CVE-2021-39171

GHSA-5379-R78W-42H2

Affected Products

Passport-Saml

References · 8

• https://github.com/node-saml/passport-saml/pull/595 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-39171 · Security Note
• https://osv.dev/vulnerability/GHSA-5379-r78w-42h2 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-39171 · Vendor Advisory
• https://github.com/node-saml/passport-saml/security/advisories/GHSA-5379-r78w-42h2 · Note
• https://github.com/node-saml/passport-saml · Note
• https://github.com/node-saml/passport-saml/commit/f1e00b64c21a725f545e675cd810bbaa435a3972 · Note
• https://t.me/cvenotify/20291 · Telegram Post