Arista Networks Rib agent DoS (SA0033)

high Nessus Plugin ID 133859

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Synopsis

The version of Arista Networks EOS running on the remote device is affected by a denial of service vulnerability.

Description

The version of Arista Networks EOS running on the remote device is affected by a denial of service (DoS) vulnerability.
The switch's Rib agent may restart if a malicious BGP peer sends a malformed path attribute in an UPDATE message, resulting in a DoS condition.

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

Solution

Upgrade to Arista Networks EOS version 4.20.2F or later. Alternatively, apply the patch or recommended mitigation referenced in the vendor advisory.

Plugin Details

Severity: High

ID: 133859

File Name: arista_eos_sa0033.nasl

Version: 1.4

Type: combined

Family: Misc.

Published: 2/21/2020

Updated: 2/24/2020

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2018-5254

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:arista:eos

Required KB Items: Host/Arista-EOS/Version

Exploit Ease: No known exploits are available

Patch Publication Date: 4/5/2018

Vulnerability Publication Date: 4/5/2018

Reference Information

CVE: CVE-2018-5254

Detections

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