CVE-2021-40114
Cisco Snort Denial of Service Vulnerability
Description
Multiple Cisco products are affected by a vulnerability in the way the Snort detection engine processes ICMP traffic that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper memory resource management while the Snort detection engine is processing ICMP packets. An attacker could exploit this vulnerability by sending a series of ICMP packets through an affected device. A successful exploit could allow the attacker to exhaust resources on the affected device, causing the device to reload.
INFO
Published Date :
Oct. 27, 2021, 7:15 p.m.
Last Modified :
Nov. 26, 2024, 4:09 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2021-40114
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.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | HIGH | [email protected] | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Upgrade to a fixed version.
- If applicable, upgrade the Snort packages.
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-2021-40114.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-40114 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-2021-40114
weaknesses.
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-2021-40114 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-40114 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.
-
CPE Deprecation Remap by [email protected]
Nov. 26, 2024
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:cisco:firepower_management_center:2.9.14.0:*:*:*:*:*:*:* OR *cpe:2.3:a:cisco:secure_firewall_management_center:2.9.14.0:*:*:*:*:*:*:* -
CPE Deprecation Remap by [email protected]
Nov. 26, 2024
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:cisco:firepower_management_center:2.9.15:*:*:*:*:*:*:* OR *cpe:2.3:a:cisco:secure_firewall_management_center:2.9.15:*:*:*:*:*:*:* -
CPE Deprecation Remap by [email protected]
Nov. 26, 2024
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:cisco:firepower_management_center:2.9.17:*:*:*:*:*:*:* OR *cpe:2.3:a:cisco:secure_firewall_management_center:2.9.17:*:*:*:*:*:*:* -
CPE Deprecation Remap by [email protected]
Nov. 26, 2024
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:cisco:firepower_management_center:2.9.16:*:*:*:*:*:*:* OR *cpe:2.3:a:cisco:secure_firewall_management_center:2.9.16:*:*:*:*:*:*:* -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2023/02/msg00011.html Added Reference https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-dos-s2R7W9UU Added Reference https://www.debian.org/security/2023/dsa-5354 -
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:H/PR:N/UI:N/S:C/C:N/I:N/A:H Added CVSS V3.1 Cisco Systems, Inc. AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H -
CVE Modified by [email protected]
Feb. 19, 2023
Action Type Old Value New Value Added Reference https://www.debian.org/security/2023/dsa-5354 [No Types Assigned] -
CVE Modified by [email protected]
Feb. 11, 2023
Action Type Old Value New Value Added Reference https://lists.debian.org/debian-lts-announce/2023/02/msg00011.html [No Types Assigned] -
Initial Analysis by [email protected]
Oct. 29, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/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-snort-dos-s2R7W9UU No Types Assigned https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-dos-s2R7W9UU Vendor Advisory Added CWE NIST CWE-401 Added CPE Configuration OR *cpe:2.3:a:cisco:firepower_management_center:2.9.14.0:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_management_center:2.9.15:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_management_center:2.9.16:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_management_center:2.9.17:*:*:*:*:*:*:* *cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* versions up to (excluding) 6.4.0.12 *cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* versions from (including) 6.5.0 up to (excluding) 6.6.3 *cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* versions from (including) 6.7.0 up to (excluding) 6.7.0.2 *cpe:2.3:a:cisco:unified_threat_defense:*:*:*:*:*:*:*:* versions from (including) 16.12 up to (excluding) 16.12.6 *cpe:2.3:a:cisco:unified_threat_defense:*:*:*:*:*:*:*:* versions from (including) 17.3 up to (excluding) 17.3.4a *cpe:2.3:a:cisco:unified_threat_defense:*:*:*:*:*:*:*:* versions from (including) 17.4 up to (excluding) 17.4.2 Added CPE Configuration OR *cpe:2.3:a:snort:snort:*:*:*:*:*:*:*:* versions from (including) 2.0.0 up to (excluding) 2.9.18 -
CVE Modified by [email protected]
Oct. 27, 2021
Action Type Old Value New Value Changed Description Multiple Cisco products are affected by a vulnerability in the way the Snort detection engine processes ICMP traffic that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper memory resource management while the Snort detection engine is processing ICMP packets. An attacker could exploit this vulnerability by sending a series of ICMP packets through an affected device. A successful exploit could allow the attacker to exhaust resources on the affected device, causing the device to reload. Multiple Cisco products are affected by a vulnerability in the way the Snort detection engine processes ICMP traffic that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper memory resource management while the Snort detection engine is processing ICMP packets. An attacker could exploit this vulnerability by sending a series of ICMP packets through an affected device. A successful exploit could allow the attacker to exhaust resources on the affected device, causing the device to reload.
Vulnerability Scoring Details
Base CVSS Score: 7.5
Base CVSS Score: 7.8
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
1.77 }} 0.20%
score
0.81066
percentile