National Vulnerability Database (NVD) National Vulnerability Database (CVE-2010-0419)

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Vulnerability Summary for CVE-2010-0419

Original release date:03/05/2010

Last revised:08/21/2010

Source: US-CERT/NIST

Overview

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.

Impact

CVSS Severity (version 2.0):

CVSS v2 Base Score:4.4 (MEDIUM) (AV:L/AC:M/Au:N/C:P/I:P/A:P) (legend)

Impact Subscore: 6.4

Exploitability Subscore: 3.4

CVSS Version 2 Metrics:

Access Vector: Locally exploitable

Access Complexity: Medium

Authentication: Not required to exploit

Impact Type:Provides user account access, Allows partial confidentiality, integrity, and availability violation; Allows unauthorized disclosure of information; Allows disruption of service

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External Source: CONFIRM

Name: https://bugzilla.redhat.com/show_bug.cgi?id=563463

Hyperlink:https://bugzilla.redhat.com/show_bug.cgi?id=563463

External Source: XF

Name: kernel-selectors-privilege-escalation(56662)

Hyperlink:http://xforce.iss.net/xforce/xfdb/56662

External Source: BID

Name: 38467

Hyperlink:http://www.securityfocus.com/bid/38467

External Source: REDHAT

Name: RHSA-2010:0126

Hyperlink:http://www.redhat.com/support/errata/RHSA-2010-0126.html