National Vulnerability Database

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    Vulnerabilities Detail

CVE-2016-4439 Detail

Description

The esp_reg_write function in hw/scsi/esp.c in the 53C9X Fast SCSI Controller (FSC) support in QEMU does not properly check command buffer length, which allows local guest OS administrators to cause a denial of service (out-of-bounds write and QEMU process crash) or potentially execute arbitrary code on the QEMU host via unspecified vectors.

Source:  MITRE
Description Last Modified:  05/20/2016

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 8.2 HIGH
Vector: AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H (V3 legend)
Impact Score: 6.0
Exploitability Score: 1.5

Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): High
User Interaction (UI): None
Scope (S): Changed
Confidentiality (C): High
Integrity (I): High
Availability (A): High

CVSS v2.0 Severity and Metrics:

Base Score: 4.6 MEDIUM
Vector: (AV:L/AC:L/Au:N/C:P/I:P/A:P) (V2 legend)
Impact Subscore: 6.4
Exploitability Subscore: 3.9

Access Vector (AV): Local
Access Complexity (AC): Insufficient_Info
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): Partial
Availability (A): Partial
Additional Information:
Allows unauthorized disclosure of information
Allows unauthorized modification
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://www.openwall.com/lists/oss-security/2016/05/19/3 Patch
http://www.securityfocus.com/bid/90760
http://www.ubuntu.com/usn/USN-3047-1 Third Party Advisory
http://www.ubuntu.com/usn/USN-3047-2 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1337502 Issue Tracking VDB Entry
https://lists.gnu.org/archive/html/qemu-devel/2016-05/msg03273.html Vendor Advisory
https://security.gentoo.org/glsa/201609-01

Technical Details

Vulnerability Type (View All)

Change History

6 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2016-4439
NVD Published Date:
05/20/2016
NVD Last Modified:
06/30/2017