CVE-2016-9380

MEDIUM

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.

References

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

Details

Source: MITRE

Published: 2017-01-23

Updated: 2017-07-01

Type: CWE-20

Risk Information

CVSS v2.0

Base Score: 4.6

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

Impact Score: 6.4

Exploitability Score: 3.9

Severity: MEDIUM

CVSS v3.0

Base Score: 7.5

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

Impact Score: 5.8

Exploitability Score: 1.1

Severity: HIGH