Input validation error in Xen - CVE-2016-9379

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Main Vulnerability Database Vulnerabilities #VU32216

Input validation error in Xen - CVE-2016-9379

Published: January 23, 2017 / Updated: July 28, 2020


Vulnerability identifier: #VU32216
CSH Severity: Low
CVSS v4: 6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N]
CVE-ID: CVE-2016-9379
CWE-ID: CWE-20
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local privileged user to read and manipulate data.

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.


Affected software

Xen
xen (Alpine package)
xen
Fedora

How to mitigate CVE-2016-9379

Install update from vendor's website.

xen (Alpine package) - update to 4.5.3-r2
xen - addressed in versions 4.5.5-4.fc23, 4.6.4-2.fc24, 4.7.1-3.fc25

External References

Related Security Bulletins