Home/CVE/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-vir
CVE

CVE-2009-3525

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-vir

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.

HIGH · CVSS 7.2 EPSS 0.01341
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  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
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Affected Products & Versions

1
xenall versions
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Public Exploits & PoCs

5
localXen 3.x - pygrub Local Authentication Bypassverified
pocwww.securityfocus.com · 36523www.securityfocus.com
pocxenbits.xensource.com · 8f783adc0ee3xenbits.xensource.com
pocbugzilla.redhat.com · show_bug.cgi?id=525740bugzilla.redhat.com
pocbugzilla.redhat.com · show_bug.cgi?id=525740#c0bugzilla.redhat.com
▣

Scoring & Timeline

7.2
HIGH · CVSS v2 (legacy) · cve@mitre.org
View on NVD
This CVE predates CVSS v3; the legacy v2 score is shown so triage still has a severity to work with.
v2 Vector
AV:L/AC:L/Au:N/C:C/I:C/A:C
Published to NVD05 Oct 2009 · 07:30 PM
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Vendor Advisories

1
rhsaRHSA-2009:1472Moderate
🔗

References & Sources

6
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://lists.opensuse.org/opensuse-security-announce/2010-05/msg00002.html
http://secunia.com/advisories/36908Vendor Advisory
http://www.openwall.com/lists/oss-security/2009/09/25/1Patch
http://www.redhat.com/support/errata/RHSA-2009-1472.htmlVendor Advisory
http://www.securitytracker.com/id?1022950
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9466
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