CVE-2016-9379 Information

Description

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 Vector

CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N

Reference

http://www.securityfocus.com/bid/94473 http://www.securitytracker.com/id/1037347 http://xenbits.xen.org/xsa/advisory-198.html http://xenbits.xen.org/xsa/xsa198.patch https://security.gentoo.org/glsa/201612-56 https://support.citrix.com/article/CTX218775

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction Required

HIGH

Scope

NONE

Confidentiality Impact

CHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

NONE

Base Severity

7.9