CVE-2016-9380

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.

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.09%
Vendor Advisory gentoo.org Vendor Advisory xen.org Vendor Advisory xen.org
Affected: n/a n/a
Published at:
Updated at:

References

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

Frequently Asked Questions

What is the severity of CVE-2016-9380?
CVE-2016-9380 has been scored as a high severity vulnerability.
How to fix CVE-2016-9380?
To fix CVE-2016-9380, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-9380 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2016-9380 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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