Detections
Analytics

Xen Hypervisor Memory Leak on Boot (XSA-235)

medium Nessus Plugin ID 103700

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Synopsis

The remote Xen hypervisor installation is missing a security update.

Description

According to its self-reported version number, the Xen hypervisor installed on the remote host is affected by flaw within the page_alloc.c and asm-arm/numa.h due to not scrubbing the memory on boot. This could potentially leave sensitive information available to read after a reboot.

This issue only affects ARM systems. x86 systems are not affected.

Note that Nessus has checked the changeset versions based on the xen.git change log. Nessus did not check guest hardware configurations or if patches were applied manually to the source code before a recompile and reinstall.

Solution

Apply the appropriate patch according to the vendor advisory.

See Also

http://xenbits.xen.org/xsa/advisory-245.html

https://xenbits.xen.org/gitweb/?p=xen.git;a=summary

Plugin Details

Severity: Medium

ID: 103700

File Name: xen_server_XSA-245.nasl

Version: 1.8

Type: local

Family: Misc.

Published: 10/6/2017

Updated: 6/3/2021

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Vulnerability Information

CPE: cpe:/o:xen:xen

Required KB Items: Settings/ParanoidReport, installed_sw/Xen Hypervisor

Patch Publication Date: 9/28/2017

Vulnerability Publication Date: 9/28/2017

Reference Information

IAVB: 2017-B-0134-S