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gentooGentoo FoundationGLSA-201701-05
HistoryJan 01, 2017 - 12:00 a.m.

BusyBox: Denial of service

2017-01-0100:00:00
Gentoo Foundation
security.gentoo.org
20

7.8 High

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:N/I:N/A:C

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

0.049 Low

EPSS

Percentile

92.8%

JSON

Background

BusyBox is a set of tools for embedded systems and is a replacement for GNU Coreutils.

Description

The recv_and_process_client_pkt function in networking/ntpd.c in BusyBox allows remote attackers to cause a Denial of Service (CPU and bandwidth consumption) via a forged NTP packet, which triggers a communication loop.

Impact

A remote attacker might send a specially crafted package to a machine running BusyBox ntpd, possibly resulting in a Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

All BusyBox users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=sys-apps/busybox-1.25.1"
OSVersionArchitecturePackageVersionFilename
Gentooanyallsys-apps/busybox< 1.25.1UNKNOWN

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7.8 High

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:N/I:N/A:C

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

0.049 Low

EPSS

Percentile

92.8%

JSON
Related for GLSA-201701-05
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