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Juniper Junos OS Multiple Vulnerabilities (JSA11200)

high Nessus Plugin ID 151636

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Synopsis

The remote device is missing a vendor-supplied security patch.

Description

The version of Junos OS installed on the remote host is affected by multiple vulnerabilities as referenced in the JSA11200 advisory.

 - A buffer overflow vulnerability in the TCP/IP stack of Juniper Networks Junos OS allows an attacker to send specific sequences of packets to the device thereby causing a Denial of Service (DoS). By repeatedly sending these sequences of packets to the device, an attacker can sustain the Denial of Service (DoS) condition. The device will abnormally shut down as a result of these sent packets. A potential indicator of compromise will be the following message in the log files: eventd[13955]: SYSTEM_ABNORMAL_SHUTDOWN:
 System abnormally shut down These issue are only triggered by traffic destined to the device. Transit traffic will not trigger these issues. (CVE-2021-0283, CVE-2021-0284)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Apply the relevant Junos software release referenced in Juniper advisory JSA11200

See Also

https://kb.juniper.net/JSA11200

Plugin Details

Severity: High

ID: 151636

File Name: juniper_jsa11200.nasl

Version: 1.6

Type: combined

Published: 7/14/2021

Updated: 1/26/2022

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2021-0284

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: cpe:/o:juniper:junos

Required KB Items: Host/Juniper/JUNOS/Version

Exploit Ease: No known exploits are available

Patch Publication Date: 7/14/2021

Vulnerability Publication Date: 7/14/2021

Reference Information

CVE: CVE-2021-0283, CVE-2021-0284

IAVA: 2021-A-0324-S

JSA: JSA11200