7.1
HIGH
CVE-2023-20168
Cisco NX-OS RADIUS/TACACS+ Input Validation DoS Vulnerability
Description

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.

INFO

Published Date :

Aug. 23, 2023, 7:15 p.m.

Last Modified :

Nov. 21, 2024, 7:40 a.m.

Source :

[email protected]

Remotely Exploitable :

No

Impact Score :

4.0

Exploitability Score :

2.5
Affected Products

The following products are affected by CVE-2023-20168 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Cisco nx-os
2 Cisco mds_9000
3 Cisco nexus_7000
4 Cisco nexus_1000v
5 Cisco nexus_5548p
6 Cisco nexus_5548up
7 Cisco nexus_5596up
8 Cisco nexus_3048
9 Cisco nexus_3548
10 Cisco mds_9100
11 Cisco nexus_5596t
12 Cisco nexus_56128p
13 Cisco nexus_5672up
14 Cisco nexus_6001
15 Cisco nexus_6004
16 Cisco nexus_6004x
17 Cisco nexus_31108pc-v
18 Cisco nexus_31108tc-v
19 Cisco nexus_31128pq
20 Cisco nexus_3132c-z
21 Cisco nexus_3132q-v
22 Cisco nexus_3132q-xl
23 Cisco nexus_3164q
24 Cisco nexus_3172pq
25 Cisco nexus_3172pq-xl
26 Cisco nexus_3172tq
27 Cisco nexus_3172tq-32t
28 Cisco nexus_3172tq-xl
29 Cisco nexus_3232
30 Cisco nexus_3264c-e
31 Cisco nexus_3264q
32 Cisco nexus_3408-s
33 Cisco nexus_34180yc
34 Cisco nexus_34200yc-sm
35 Cisco nexus_3432d-s
36 Cisco nexus_3464c
37 Cisco nexus_3524
38 Cisco nexus_3524-x
39 Cisco nexus_3524-xl
40 Cisco nexus_3548-x
41 Cisco nexus_3548-xl
42 Cisco nexus_36180yc-r
43 Cisco nexus_9232e
44 Cisco nexus_92348gc-x
45 Cisco nexus_9408
46 Cisco nexus_9504
47 Cisco nexus_9508
48 Cisco nexus_9516
49 Cisco nexus_5624q
50 Cisco nexus_5648q
51 Cisco nexus_5696q
52 Cisco nexus_7004
53 Cisco nexus_7009
54 Cisco nexus_7010
55 Cisco nexus_7018
56 Cisco mds_9132t
57 Cisco mds_9134
58 Cisco mds_9140
59 Cisco mds_9148
60 Cisco mds_9148s
61 Cisco mds_9148t
62 Cisco mds_9200
63 Cisco mds_9216
64 Cisco mds_9216a
65 Cisco mds_9216i
66 Cisco mds_9222i
67 Cisco mds_9250i
68 Cisco mds_9396s
69 Cisco mds_9396t
70 Cisco mds_9500
71 Cisco mds_9506
72 Cisco mds_9509
73 Cisco mds_9513
74 Cisco mds_9700
75 Cisco mds_9706
76 Cisco mds_9710
77 Cisco mds_9718
78 Cisco nexus_5500
79 Cisco nexus_5600
80 Cisco nexus_5672up-16g
81 Cisco nexus_6000
82 Cisco nexus_6001p
83 Cisco nexus_6001t
84 Cisco nexus_1000_virtual_edge
: Total Affected Vendor : 1 | Products : 84
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2023-20168.

URL Resource
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-remoteauth-dos-XB6pv74m Vendor Advisory
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-remoteauth-dos-XB6pv74m Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2023-20168 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2023-20168 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-remoteauth-dos-XB6pv74m
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Jan. 25, 2024

    Action Type Old Value New Value
    Added CWE Cisco Systems, Inc. CWE-120
  • Initial Analysis by [email protected]

    Sep. 05, 2023

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
    Changed Reference Type https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-remoteauth-dos-XB6pv74m No Types Assigned https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-remoteauth-dos-XB6pv74m Vendor Advisory
    Added CWE NIST CWE-20
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:nx-os:9.3\(11\):*:*:*:*:*:*:* *cpe:2.3:o:cisco:nx-os:10.2\(5\):*:*:*:*:*:*:* OR cpe:2.3:h:cisco:nexus_3048:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_31108pc-v:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_31108tc-v:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_31128pq:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_3132c-z:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_3132q-v:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_3132q-xl:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_3164q:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_3172pq:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_3172pq-xl:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_3172tq:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_3172tq-32t:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_3172tq-xl:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_3232:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_3264c-e:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_3264q:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_3408-s:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_34180yc:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_34200yc-sm:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_3432d-s:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_3464c:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_3524:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_3524-x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_3524-xl:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_3548:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_3548-x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_3548-xl:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_36180yc-r:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_9232e:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_92348gc-x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_9408:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_9504:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_9508:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_9516:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:cisco:nx-os:-:*:*:*:*:*:*:* OR cpe:2.3:h:cisco:mds_9000:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:mds_9100:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:mds_9132t:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:mds_9134:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:mds_9140:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:mds_9148:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:mds_9148s:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:mds_9148t:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:mds_9200:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:mds_9216:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:mds_9216a:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:mds_9216i:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:mds_9222i:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:mds_9250i:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:mds_9396s:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:mds_9396t:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:mds_9500:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:mds_9506:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:mds_9509:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:mds_9513:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:mds_9700:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:mds_9706:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:mds_9710:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:mds_9718:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_1000_virtual_edge:-:*:*:*:*:vmware_vsphere:*:* cpe:2.3:h:cisco:nexus_1000v:-:*:*:*:*:microsoft_hyper-v:*:* cpe:2.3:h:cisco:nexus_1000v:-:*:*:*:*:vmware_vsphere:*:* cpe:2.3:h:cisco:nexus_5500:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_5548p:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_5548up:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_5596t:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_5596up:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_5600:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_56128p:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_5624q:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_5648q:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_5672up:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_5672up-16g:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_5696q:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_6000:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_6001:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_6001p:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_6001t:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_6004:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_6004x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_7000:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_7004:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_7009:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_7010:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:nexus_7018:-:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2023-20168 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2023-20168 weaknesses.

CAPEC-3: Using Leading 'Ghost' Character Sequences to Bypass Input Filters Using Leading 'Ghost' Character Sequences to Bypass Input Filters CAPEC-7: Blind SQL Injection Blind SQL Injection CAPEC-8: Buffer Overflow in an API Call Buffer Overflow in an API Call CAPEC-9: Buffer Overflow in Local Command-Line Utilities Buffer Overflow in Local Command-Line Utilities CAPEC-10: Buffer Overflow via Environment Variables Buffer Overflow via Environment Variables CAPEC-13: Subverting Environment Variable Values Subverting Environment Variable Values CAPEC-14: Client-side Injection-induced Buffer Overflow Client-side Injection-induced Buffer Overflow CAPEC-22: Exploiting Trust in Client Exploiting Trust in Client CAPEC-23: File Content Injection File Content Injection CAPEC-24: Filter Failure through Buffer Overflow Filter Failure through Buffer Overflow CAPEC-28: Fuzzing Fuzzing CAPEC-31: Accessing/Intercepting/Modifying HTTP Cookies Accessing/Intercepting/Modifying HTTP Cookies CAPEC-42: MIME Conversion MIME Conversion CAPEC-43: Exploiting Multiple Input Interpretation Layers Exploiting Multiple Input Interpretation Layers CAPEC-45: Buffer Overflow via Symbolic Links Buffer Overflow via Symbolic Links CAPEC-46: Overflow Variables and Tags Overflow Variables and Tags CAPEC-47: Buffer Overflow via Parameter Expansion Buffer Overflow via Parameter Expansion CAPEC-52: Embedding NULL Bytes Embedding NULL Bytes CAPEC-53: Postfix, Null Terminate, and Backslash Postfix, Null Terminate, and Backslash CAPEC-63: Cross-Site Scripting (XSS) Cross-Site Scripting (XSS) CAPEC-64: Using Slashes and URL Encoding Combined to Bypass Validation Logic Using Slashes and URL Encoding Combined to Bypass Validation Logic CAPEC-67: String Format Overflow in syslog() String Format Overflow in syslog() CAPEC-71: Using Unicode Encoding to Bypass Validation Logic Using Unicode Encoding to Bypass Validation Logic CAPEC-72: URL Encoding URL Encoding CAPEC-73: User-Controlled Filename User-Controlled Filename CAPEC-78: Using Escaped Slashes in Alternate Encoding Using Escaped Slashes in Alternate Encoding CAPEC-79: Using Slashes in Alternate Encoding Using Slashes in Alternate Encoding CAPEC-80: Using UTF-8 Encoding to Bypass Validation Logic Using UTF-8 Encoding to Bypass Validation Logic CAPEC-81: Web Server Logs Tampering Web Server Logs Tampering CAPEC-83: XPath Injection XPath Injection CAPEC-85: AJAX Footprinting AJAX Footprinting CAPEC-88: OS Command Injection OS Command Injection CAPEC-101: Server Side Include (SSI) Injection Server Side Include (SSI) Injection CAPEC-104: Cross Zone Scripting Cross Zone Scripting CAPEC-108: Command Line Execution through SQL Injection Command Line Execution through SQL Injection CAPEC-109: Object Relational Mapping Injection Object Relational Mapping Injection CAPEC-110: SQL Injection through SOAP Parameter Tampering SQL Injection through SOAP Parameter Tampering CAPEC-120: Double Encoding Double Encoding CAPEC-135: Format String Injection Format String Injection CAPEC-136: LDAP Injection LDAP Injection CAPEC-153: Input Data Manipulation Input Data Manipulation CAPEC-182: Flash Injection Flash Injection CAPEC-209: XSS Using MIME Type Mismatch XSS Using MIME Type Mismatch CAPEC-230: Serialized Data with Nested Payloads Serialized Data with Nested Payloads CAPEC-231: Oversized Serialized Data Payloads Oversized Serialized Data Payloads CAPEC-250: XML Injection XML Injection CAPEC-261: Fuzzing for garnering other adjacent user/sensitive data Fuzzing for garnering other adjacent user/sensitive data CAPEC-267: Leverage Alternate Encoding Leverage Alternate Encoding CAPEC-473: Signature Spoof Signature Spoof CAPEC-588: DOM-Based XSS DOM-Based XSS CAPEC-664: Server Side Request Forgery Server Side Request Forgery CAPEC-8: Buffer Overflow in an API Call Buffer Overflow in an API Call CAPEC-9: Buffer Overflow in Local Command-Line Utilities Buffer Overflow in Local Command-Line Utilities CAPEC-10: Buffer Overflow via Environment Variables Buffer Overflow via Environment Variables CAPEC-14: Client-side Injection-induced Buffer Overflow Client-side Injection-induced Buffer Overflow CAPEC-24: Filter Failure through Buffer Overflow Filter Failure through Buffer Overflow CAPEC-42: MIME Conversion MIME Conversion CAPEC-44: Overflow Binary Resource File Overflow Binary Resource File CAPEC-45: Buffer Overflow via Symbolic Links Buffer Overflow via Symbolic Links CAPEC-46: Overflow Variables and Tags Overflow Variables and Tags CAPEC-47: Buffer Overflow via Parameter Expansion Buffer Overflow via Parameter Expansion CAPEC-67: String Format Overflow in syslog() String Format Overflow in syslog() CAPEC-92: Forced Integer Overflow Forced Integer Overflow CAPEC-100: Overflow Buffers Overflow Buffers
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.06 }} 0.01%

score

0.23077

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
: