CVE-2016-9379

The pygrub boot loader emulator in Xen, when S-expression output format is requested, allows local pygrub-using guest OS administrators to read or delete arbitrary files on the host via string quotes and S-expressions in the bootloader configuration file.

CVSS v3.0 7.9 HIGH
CVSS v2.0 4.6 MEDIUM

7.9^/10

CVSS v3.0 : HIGH

Vector : AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N

Exploitability : 1.5 / Impact : 5.8

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope CHANGED

4.6^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 3.9 / Impact : 6.4

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://support.citrix.com/article/CTX218775	Patch Third Party Advisory
http://xenbits.xen.org/xsa/xsa198.patch	Patch Vendor Advisory
http://xenbits.xen.org/xsa/advisory-198.html	Patch Vendor Advisory
http://www.securitytracker.com/id/1037347	Third Party Advisory VDB Entry
http://www.securityfocus.com/bid/94473	Third Party Advisory VDB Entry
https://security.gentoo.org/glsa/201612-56

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Configurations

Configuration 1 (hide)

cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR	cpe:2.3:a:citrix:xenserver:6.0.2:::::::*
	cpe:2.3:a:citrix:xenserver:7.0:::::::*
	cpe:2.3:a:citrix:xenserver:6.5:::::::*
	cpe:2.3:a:citrix:xenserver:6.2.0:::::::*

Information

Published : 2017-01-23 13:59

Updated : 2017-06-30 18:30

NVD link : CVE-2016-9379

Mitre link : CVE-2016-9379

JSON object : View

CWE

CWE-20

Improper Input Validation

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Products Affected

citrix

xenserver

xen

xen

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