CVE-2009-3525 EXPLOIT
7.2
HIGH · CVSS 2.0 · EPSS 1.2% (pctl 68)
Patch early
A public exploit exists.
Description
The pyGrub boot loader in Xen 3.0.3, 3.3.0, and Xen-3.3.1 does not support the password option in grub.conf for para-virtualized guests, which allows attackers with access to the para-virtualized guest console to boot the guest or modify the guest's kernel boot parameters without providing the expected password.
Scoring
| CVSS | 7.2 (HIGH, v2.0) |
|---|---|
| Vector | AV:L/AC:L/Au:N/C:C/I:C/A:C |
| EPSS | 1.24% — more likely to be exploited than 68% of all CVEs |
| Weakness | CWE-264 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2009-10-05 |
| Last modified | 2026-06-16 |
Affected (1)
| Vendor | Product |
|---|---|
| xen | xen |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Xen 3.x - pygrub Local Authentication Bypass | 2009-09-25 |
References
- http://lists.opensuse.org/opensuse-security-announce/2010-05/msg00002.html
- http://secunia.com/advisories/36908
- http://www.openwall.com/lists/oss-security/2009/09/25/1
- http://www.redhat.com/support/errata/RHSA-2009-1472.html
- http://www.securityfocus.com/bid/36523
- http://www.securitytracker.com/id?1022950
- http://xenbits.xensource.com/xen-unstable.hg?rev/8f783adc0ee3
- https://bugzilla.redhat.com/show_bug.cgi?id=525740
- https://bugzilla.redhat.com/show_bug.cgi?id=525740#c0
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9466
- http://lists.opensuse.org/opensuse-security-announce/2010-05/msg00002.html
- http://secunia.com/advisories/36908
- http://www.openwall.com/lists/oss-security/2009/09/25/1
- http://www.redhat.com/support/errata/RHSA-2009-1472.html
- http://www.securityfocus.com/bid/36523
- http://www.securitytracker.com/id?1022950
- http://xenbits.xensource.com/xen-unstable.hg?rev/8f783adc0ee3
- https://bugzilla.redhat.com/show_bug.cgi?id=525740
- https://bugzilla.redhat.com/show_bug.cgi?id=525740#c0
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9466
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