CVE-2024-47832CWE-347

XML Signature Bypass via differential XML parsing in ssoready

Critical · published October 9, 2024

CVSS v4.0
9.3
EPSS
0%
Percentile
33.2
In the wild
Unconfirmed
What it is

🚨 A signature bypass vulnerability lurks in SSOReady, and it only needs access to specific IDP-signed messages to exploit! 🔥 Think of it like a VIP event where only certain guests have unique invitations, but a sneaky party crasher finds a way to photocopy those invites and waltzes in. The flaw lies in how different XML parsers treat signature validation, allowing unauthorized access to the party! If an attacker gets hold of those IDP-signed messages, they could bypass security checks and impersonate users, potentially leading to unauthorized access to sensitive resources. This could result in data leaks, privacy violations, and a massive breach of trust — absolutely devastating!

Put simply

Think of it like a VIP event where only certain guests have unique invitations, but a sneaky party crasher finds a way to photocopy those invites and waltzes in. The flaw lies in how different XML parsers treat signature validation, allowing unauthorized access to the party! This vulnerability arises from differential behavior in XML parsers that fail to validate signatures properly. An attacker can exploit this by using crafted messages to bypass authentication mechanisms within SSOReady.

What to do

If an attacker gets hold of those IDP-signed messages, they could bypass security checks and impersonate users, potentially leading to unauthorized access to sensitive resources. This could result in data leaks, privacy violations, and a massive breach of trust — absolutely devastating! To safeguard your self-hosted SSOReady instance, update your Docker images to include the latest version 7f92a06 or later. It's crucial to ensure you're using the correct SHA to avoid this critical vulnerability. Don't delay, get on it ASAP! You've got this! Following these steps will help you secure your system in no time. 🛡️

The record
Technical detail
CVSS v4.0
9.3 · CRITICAL
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00401 · 33.2th percentile
Weakness
CWE-347 · Improper Verification of Cryptographic Signature
Published
2024-10-09T18:32Z
EPSS history
Timeline
  • 09 OCT 18:32Z
    XML Signature Bypass via differential XML parsing in ssoready
    cvelistv5