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FreeBSD : FreeBSD -- Xen guests can triger backend Out Of Memory (5d91370b-61fd-11eb-b87a-901b0ef719ab)

medium Nessus Plugin ID 145567

Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

Some OSes (including Linux, FreeBSD, and NetBSD) are processing watch events using a single thread. If the events are received faster than the thread is able to handle, they will get queued.

As the queue is unbound, a guest may be able to trigger a OOM in the backend.

Solution

Update the affected packages.

See Also

http://www.nessus.org/u?1e9a0118

Plugin Details

Severity: Medium

ID: 145567

File Name: freebsd_pkg_5d91370b61fd11ebb87a901b0ef719ab.nasl

Version: 1.3

Type: local

Published: 1/29/2021

Updated: 1/25/2024

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 4.9

Temporal Score: 3.6

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

CVSS Score Source: CVE-2020-29568

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

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

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

Exploit Ease: No known exploits are available

Patch Publication Date: 1/29/2021

Vulnerability Publication Date: 1/29/2021

Reference Information

CVE: CVE-2020-29568

FreeBSD: SA-21:02.xenoom