CVE-2016-9379

Name: CVE-2016-9379
Creator: NVD / NIST
Published: 2017-01-23T21:59:02.707+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.44%

Last modified Jun 17, 2026

CVE-2016-9379 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 0.44% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

0.44%

35.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Xen	Xen	All versions
Citrix	Xenserver	6.0.2
Citrix	Xenserver	6.2.0
Citrix	Xenserver	6.5
Citrix	Xenserver	7.0

References

http://www.securityfocus.com/bid/94473Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1037347Third Party Advisory, VDB Entry
http://xenbits.xen.org/xsa/advisory-198.htmlPatch, Vendor Advisory
http://xenbits.xen.org/xsa/xsa198.patchPatch, Vendor Advisory
https://security.gentoo.org/glsa/201612-56
https://support.citrix.com/article/CTX218775Patch, Third Party Advisory
http://www.securityfocus.com/bid/94473Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1037347Third Party Advisory, VDB Entry
http://xenbits.xen.org/xsa/advisory-198.htmlPatch, Vendor Advisory
http://xenbits.xen.org/xsa/xsa198.patchPatch, Vendor Advisory
https://security.gentoo.org/glsa/201612-56
https://support.citrix.com/article/CTX218775Patch, Third Party Advisory

Timeline

Published: Jan 23, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-9379?

How severe is CVE-2016-9379?

Severity scoring for CVE-2016-9379 is pending analysis. The EPSS model estimates a 0.44% probability of exploitation in the next 30 days.

How do I fix CVE-2016-9379?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2016-9379?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST