Cisco IOS XE Software DECnet Phase IV/OSI DoS (cisco-sa-iosxe-decnet-dos-cuPWDkyL)

medium Nessus Plugin ID 149789
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Synopsis

The remote device is missing a vendor-supplied security patch

Description

According to its self-reported version, Cisco IOS-XE Software is affected by a vulnerability in the DECnet Phase IV and DECnet/OSI protocol processing. This vulnerability allows an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient input validation of DECnet traffic that is received by an affected device. An attacker could exploit this vulnerability by sending DECnet traffic to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, 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 the relevant fixed version referenced in Cisco bug ID CSCvv51476

See Also

http://www.nessus.org/u?4578be34

http://tools.cisco.com/security/center/viewErp.x?alertId=ERP-74408

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvv51476

Plugin Details

Severity: Medium

ID: 149789

File Name: cisco-sa-iosxe-decnet-dos-cuPWDkyL-iosxe.nasl

Version: 1.5

Type: combined

Family: CISCO

Published: 5/20/2021

Updated: 5/21/2021

Dependencies: cisco_ios_xe_version.nasl

Risk Information

CVSS Score Source: CVE-2021-1352

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Low

Base Score: 2.9

Temporal Score: 2.1

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

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

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

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

Vulnerability Information

CPE: cpe:/o:cisco:ios_xe

Required KB Items: Host/Cisco/IOS-XE/Version

Exploit Ease: No known exploits are available

Patch Publication Date: 3/24/2021

Vulnerability Publication Date: 3/24/2021

Reference Information

CVE: CVE-2021-1352

IAVA: 2021-A-0141

CISCO-BUG-ID: CSCvv51476

CISCO-SA: cisco-sa-iosxe-decnet-dos-cuPWDkyL

CWE: 823