CVE-2022-20623
Cisco Nexus 9000 BFD Traffic Dropper Denial of Service
Description
A vulnerability in the rate limiter for Bidirectional Forwarding Detection (BFD) traffic of Cisco NX-OS Software for Cisco Nexus 9000 Series Switches could allow an unauthenticated, remote attacker to cause BFD traffic to be dropped on an affected device. This vulnerability is due to a logic error in the BFD rate limiter functionality. An attacker could exploit this vulnerability by sending a crafted stream of traffic through the device. A successful exploit could allow the attacker to cause BFD traffic to be dropped, resulting in BFD session flaps. BFD session flaps can cause route instability and dropped traffic, resulting in a denial of service (DoS) condition. This vulnerability applies to both IPv4 and IPv6 traffic.
INFO
Published Date :
Feb. 23, 2022, 6:15 p.m.
Last Modified :
Nov. 7, 2023, 3:42 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
4.0
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2022-20623 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
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-2022-20623.
| URL | Resource |
|---|---|
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-bfd-dos-wGQXrzxn | 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).
test 反向辣鸡数据投放 CVE-2022-23305 工具 利用 教程 Exploit POC
cve-2020-
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2022-20623 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-20623 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 [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Nov. 07, 2023
Action Type Old Value New Value Removed CVSS V3 Cisco Systems, Inc. AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H Added CVSS V3.1 Cisco Systems, Inc. AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H -
Initial Analysis by [email protected]
Mar. 02, 2022
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:N/I:N/A:C) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-bfd-dos-wGQXrzxn No Types Assigned https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-bfd-dos-wGQXrzxn Vendor Advisory Added CWE NIST NVD-CWE-Other Added CPE Configuration AND OR *cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* versions from (including) 7.0\(3\)i6\(2\) up to (including) 7.0\(3\)i7\(3\) OR cpe:2.3:h:cisco:n9k-c92160yc-x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:n9k-c92300yc:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:n9k-c92304qc:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:n9k-c9232c:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:n9k-c92348gc-x:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:n9k-c9236c:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:n9k-c9272q:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:n9k-c93108tc-ex:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:n9k-c93108tc-fx:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:n9k-c9316d-gx:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:n9k-c93180lc-ex:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:n9k-c93180yc-ex:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:n9k-c93180yc-fx:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:n9k-c93180yc2-fx:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:n9k-c93216tc-fx2:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:n9k-c93240yc-fx2:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:n9k-c9332c:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:n9k-c93360yc-fx2:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:n9k-c9336c-fx2:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:n9k-c9348gc-fxp:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:n9k-c93600cd-gx:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:n9k-c9364c:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:n9k-c9364c-gx:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* versions from (including) 7.0\(3\)i6\(2\) up to (including) 9.3\(8\) *cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:* versions from (including) 10.1\(1\) up to (including) 10.2\(1\) OR cpe:2.3:h:cisco:n9k-x97160yc-ex:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:n9k-x97284yc-fx:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:n9k-x9732c-ex:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:n9k-x9732c-fx:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:n9k-x9736c-ex:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:n9k-x9736c-fx:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:n9k-x9788tc-fx:-:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Feb. 24, 2022
Action Type Old Value New Value Changed Description A vulnerability in the rate limiter for Bidirectional Forwarding Detection (BFD) traffic of Cisco NX-OS Software for Cisco Nexus 9000 Series Switches could allow an unauthenticated, remote attacker to cause BFD traffic to be dropped on an affected device. This vulnerability is due to a logic error in the BFD rate limiter functionality. An attacker could exploit this vulnerability by sending a crafted stream of traffic through the device. A successful exploit could allow the attacker to cause BFD traffic to be dropped, resulting in BFD session flaps. BFD session flaps can cause route instability and dropped traffic, resulting in a denial of service (DoS) condition. This vulnerability applies to both IPv4 and IPv6 traffic. A vulnerability in the rate limiter for Bidirectional Forwarding Detection (BFD) traffic of Cisco NX-OS Software for Cisco Nexus 9000 Series Switches could allow an unauthenticated, remote attacker to cause BFD traffic to be dropped on an affected device. This vulnerability is due to a logic error in the BFD rate limiter functionality. An attacker could exploit this vulnerability by sending a crafted stream of traffic through the device. A successful exploit could allow the attacker to cause BFD traffic to be dropped, resulting in BFD session flaps. BFD session flaps can cause route instability and dropped traffic, resulting in a denial of service (DoS) condition. This vulnerability applies to both IPv4 and IPv6 traffic.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-20623 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-2022-20623
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.13 }} 0.02%
score
0.49495
percentile