CVE-2016-9380

7.5 HIGH

Published: January 23, 2017 Modified: May 13, 2026

Description

The pygrub boot loader emulator in Xen, when nul-delimited output format is requested, allows local pygrub-using guest OS administrators to read or delete arbitrary files on the host via NUL bytes in the bootloader configuration file.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

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

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

http://www.securityfocus.com/bid/94473

Source: cve@mitre.org

Third Party Advisory VDB Entry

http://www.securitytracker.com/id/1037347

Source: cve@mitre.org

Third Party Advisory VDB Entry

http://xenbits.xen.org/xsa/advisory-198.html

Source: cve@mitre.org

Patch Vendor Advisory

http://xenbits.xen.org/xsa/xsa198.patch

Source: cve@mitre.org

Patch Vendor Advisory

https://security.gentoo.org/glsa/201612-56

Source: cve@mitre.org

https://support.citrix.com/article/CTX218775

Source: cve@mitre.org

Patch Third Party Advisory

http://www.securityfocus.com/bid/94473