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ubuntucveUbuntu.comUB:CVE-2016-4439
HistoryMay 20, 2016 - 12:00 a.m.

CVE-2016-4439

2016-05-2000:00:00
ubuntu.com
ubuntu.com
9

6.7 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

4.6 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:L/AC:L/Au:N/C:P/I:P/A:P

0.001 Low

EPSS

Percentile

25.6%

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.

Bugs

Notes

Author Note
mdeslaur qemu-kvm in precise doesn’t build esp.c on Ubuntu
OSVersionArchitecturePackageVersionFilename
ubuntu14.04noarchqemu< 2.0.0+dfsg-2ubuntu1.26UNKNOWN
ubuntu16.04noarchqemu< 1:2.5+dfsg-5ubuntu10.3UNKNOWN

6.7 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

4.6 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:L/AC:L/Au:N/C:P/I:P/A:P

0.001 Low

EPSS

Percentile

25.6%