Vulnerability CVE-2010-0419
Published: 2010-03-05   Modified: 2012-02-13

Description:
The x86 emulator in KVM 83, when a guest is configured for Symmetric Multiprocessing (SMP), does not properly restrict writing of segment selectors to segment registers, which might allow guest OS users to cause a denial of service (guest OS crash) or gain privileges on the guest OS by leveraging access to a (1) IO port or (2) MMIO region, and replacing an instruction in between emulator entry and instruction fetch.

Type:

CWE-264

 (Permissions, Privileges, and Access Controls)

CVSS2 => (AV:L/AC:M/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.4/10
6.4/10
3.4/10
Exploit range
Attack complexity
Authentication
Local
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Kvm qumranet -> KVM 

 References:
https://bugzilla.redhat.com/show_bug.cgi?id=563463
http://xforce.iss.net/xforce/xfdb/56662
http://www.securityfocus.com/bid/38467
http://www.redhat.com/support/errata/RHSA-2010-0126.html
http://securitytracker.com/id?1023663
http://oval.mitre.org/repository/data/getDef?id=oval:org.mitre.oval:def:10139
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