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FreeBSD : xen-kernel -- some pmu and profiling hypercalls log without rate limiting (e4848ca4-8820-11e5-ab94-002590263bf5)

low Nessus Plugin ID 86841

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Synopsis

The remote FreeBSD host is missing a security-related update.

Description

The Xen Project reports :

HYPERCALL_xenoprof_op and HYPERVISOR_xenpmu_op log some errors and attempts at invalid operations. These log messages are not rate-limited, even though they can be triggered by guests.

A malicious guest could cause repeated logging to the hypervisor console, leading to a Denial of Service attack.

Solution

Update the affected package.

See Also

http://xenbits.xen.org/xsa/advisory-152.html

http://www.nessus.org/u?7d4f1b3a

Plugin Details

Severity: Low

ID: 86841

File Name: freebsd_pkg_e4848ca4882011e5ab94002590263bf5.nasl

Version: 2.4

Type: local

Published: 11/11/2015

Updated: 1/6/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Low

Base Score: 2.1

Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:P

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:xen-kernel, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Patch Publication Date: 11/11/2015

Vulnerability Publication Date: 10/29/2015

Reference Information

CVE: CVE-2015-7971