xen guest root can escape to domain 0 through pygrub
Published Sep 27, 2007
6.9
MEDIUMCVSS 2.0
EPSS 0.63%
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.
Affected products
No data.
- 3.0.3
No data.
Red Hat Enterprise Linux 5
xen-0:3.0.3-25.0.4.el5
Fixed · RHSA-2007:0323
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | xen-0:3.0.3-25.0.4.el5 | Fixed | RHSA-2007:0323 |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:L/AC:M/Au:N/C:C/I:C/A:C
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (8 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 0.63% (0.00633) | 48.47th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.63% (0.00633) | 45.36th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.16% (0.00162) | 34.55th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00042) | 5.10th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 0.50th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.22% (0.03220) | 84.21th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.22% (0.03220) | 82.61th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.22% (0.03220) | 65.30th | v2 (v2022.01.01) |
References (25)
- http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1068 x_refsource_CONFIRM
- http://secunia.com/advisories/26986 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/27047 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/27072 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/27085 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/27103 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/27141 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/27161 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/27486 third-party-advisoryx_refsource_SECUNIA
- http://www.debian.org/security/2007/dsa-1384 vendor-advisoryx_refsource_DEBIAN
- http://www.mandriva.com/security/advisories?name=MDKSA-2007:203 vendor-advisoryx_refsource_MANDRIVA
- http://www.redhat.com/support/errata/RHSA-2007-0323.html vendor-advisoryx_refsource_REDHAT
- http://www.securityfocus.com/archive/1/481825/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/25825 vdb-entryx_refsource_BID
- http://www.ubuntu.com/usn/usn-527-1 vendor-advisoryx_refsource_UBUNTU
- http://www.vupen.com/english/advisories/2007/3348 vdb-entryx_refsource_VUPEN
- https://access.redhat.com/security/cve/CVE-2007-4993 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=302801 Issue Tracking
- https://issues.rpath.com/browse/RPL-1752 x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2007-4993
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11240 vdb-entrysignaturex_refsource_OVAL
- https://www.cve.org/CVERecord?id=CVE-2007-4993
- https://www.redhat.com/archives/fedora-package-announce/2007-November/msg00004.html vendor-advisoryx_refsource_FEDORA
- https://www.redhat.com/archives/fedora-package-announce/2007-October/msg00030.html vendor-advisoryx_refsource_FEDORA
- https://www.redhat.com/archives/fedora-package-announce/2007-October/msg00082.html vendor-advisoryx_refsource_FEDORA
Change history (0)
No recorded changes yet.