Cisco NX-OS TACACS+/RADIUS denial of service

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Cisco NX-OS. Impacted is an unknown function of the component TACACS+/RADIUS. The manipulation leads to denial of service. This vulnerability is traded as CVE-2023-20168. An attack has to be approached locally. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Cisco NX-OS (Router Operating System) (affected version not known). It has been rated as problematic. This issue affects some unknown functionality of the component TACACS+/RADIUS. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability. The summary by CVE is:

A vulnerability in TACACS+ and RADIUS remote authentication for Cisco NX-OS Software could allow an unauthenticated, local attacker to cause an affected device to unexpectedly reload. This vulnerability is due to incorrect input validation when processing an authentication attempt if the directed request option is enabled for TACACS+ or RADIUS. An attacker could exploit this vulnerability by entering a crafted string at the login prompt of an affected device. A successful exploit could allow the attacker to cause the affected device to unexpectedly reload, resulting in a denial of service (DoS) condition.

The weakness was shared 08/23/2023 as cisco-sa-nxos-remoteauth-dos-XB6pv74m. The advisory is shared at sec.cloudapps.cisco.com. The identification of this vulnerability is CVE-2023-20168 since 10/27/2022. Neither technical details nor an exploit are publicly available.

Upgrading eliminates this vulnerability.

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Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CNA Base Score: 7.1
CNA Vector (Cisco Systems, Inc.): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/27/2022 🔍
08/23/2023 +300 days 🔍
08/23/2023 +0 days 🔍
09/16/2023 +24 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-nxos-remoteauth-dos-XB6pv74m
Status: Confirmed

CVE: CVE-2023-20168 (🔍)
GCVE (CVE): GCVE-0-2023-20168
GCVE (VulDB): GCVE-100-237869

Entryinfo

Created: 08/23/2023 23:31
Updated: 09/16/2023 14:42
Changes: 08/23/2023 23:31 (49), 09/16/2023 14:42 (12)
Complete: 🔍
Cache ID: 216::103

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