Cisco IOS Software IKEv2 AutoReconnect Feature DoS (cisco-sa-ikev2-ebFrwMPr)

high Nessus Plugin ID 155733

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Synopsis

The remote device is missing a vendor-supplied security patch

Description

According to its self-reported version, Cisco IOS is affected by a denial of service (DoS) vulnerability in its AutoReconnect feature. An authenticated, remote attacker can exploit this issue to cause a DoS condition by exhausting the free IP addresses from the assigned local pool.

Please see the included Cisco BIDs and Cisco Security Advisory for more information.

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 the relevant fixed version referenced in Cisco bug ID CSCvw25564

Plugin Details

Severity: High

ID: 155733

File Name: cisco-sa-ikev2-ebFrwMPr-ios.nasl

Version: 1.6

Type: combined

Family: CISCO

Published: 11/30/2021

Updated: 9/28/2023

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Low

Base Score: 3.5

Temporal Score: 2.6

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

CVSS Score Source: CVE-2021-1620

CVSS v3

Risk Factor: High

Base Score: 7.7

Temporal Score: 6.7

Vector: CVSS:3.0/AV:N/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: cpe:/o:cisco:ios

Required KB Items: Host/Cisco/IOS/Version

Exploit Ease: No known exploits are available

Patch Publication Date: 9/22/2021

Vulnerability Publication Date: 9/22/2021

Reference Information

CVE: CVE-2021-1620

CISCO-SA: cisco-sa-ikev2-ebFrwMPr

IAVA: 2021-A-0441-S

CISCO-BUG-ID: CSCvw25564

Detections

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