Detections
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Juniper Junos SNMP DoS (JSA11080)

high Nessus Plugin ID 141849

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Synopsis

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

Description

According to the self reported version of Junos OS on the remote device, the device is vulnerable to a denial of service vulnerability due to a memory leak. An unauthenticated, remote attacker can exploit this, by sending multiple of a specific SNMP OID poll, to consume increasing amounts of memory, which will eventually lead to a kernel crash (vmcore). Prior to the crash, other processes might be impacted, such as failure to establish SSH connection to the device.

Note that Nessus has not attempted to exploit 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 JSA11080

See Also

https://kb.juniper.net/JSA11080

Plugin Details

Severity: High

ID: 141849

File Name: juniper_jsa11080.nasl

Version: 1.9

Type: combined

Published: 10/23/2020

Updated: 6/3/2021

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-2020-1683

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: 10/14/2020

Vulnerability Publication Date: 10/14/2020

Reference Information

CVE: CVE-2020-1683

IAVA: 2020-A-0467-S

JSA: JSA11080