PT-2024-40484 · Unknown · Simplesamlphp

Published 2024-05-28 · Updated 2024-05-28

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions SimpleSAMLphp versions prior to 1.17.3

Description The issue arises from SimpleSAMLphp's trust in metadata when sending SAML messages to other entities. If a malicious party alters the metadata to include JavaScript code in endpoint URLs, SimpleSAMLphp will use these URLs without validation, potentially leading to a reflected XSS attack. This could result in the execution of JavaScript code in the end user's browser if a strict Content Security Policy is not in place. The estimated number of potentially affected devices is not specified. There is no information about real-world incidents where this issue was exploited.

Recommendations For SimpleSAMLphp versions prior to 1.17.3, update to version 1.17.3 or later to resolve the issue. As a temporary workaround, consider implementing a strict Content Security Policy to forbid inline JavaScript. Restrict access to metadata management to minimize the risk of exploitation. Avoid consuming metadata automatically from untrusted sources.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

GHSA-VPR3-CW3H-PRW8

Affected Products

Simplesamlphp

References · 5

• https://osv.dev/vulnerability/GHSA-vpr3-cw3h-prw8 · Vendor Advisory
• https://github.com/FriendsOfPHP/security-advisories/blob/master/simplesamlphp/simplesamlphp/2019-07-10.yaml · Note
• https://github.com/simplesamlphp/simplesamlphp/commit/ce2294e092b3be7db2fc4e18e774b791d4564ff3 · Note
• https://github.com/simplesamlphp/simplesamlphp · Note
• https://simplesamlphp.org/security/201907-01 · Note