CVE-2021-34792
"Cisco ASA/FTD Remote Connectionicit Overload Denial of Service"
Description
A vulnerability in the memory management of Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper resource management when connection rates are high. An attacker could exploit this vulnerability by opening a significant number of connections on an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.
INFO
Published Date :
Oct. 27, 2021, 7:15 p.m.
Last Modified :
Nov. 7, 2023, 3:36 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
4.0
Exploitability Score :
3.9
Affected Products
The following products are affected by CVE-2021-34792
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.
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-2021-34792.
| URL | Resource |
|---|---|
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-ftd-dos-Unk689XY | 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-2021-34792 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-34792 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 -
CPE Deprecation Remap by [email protected]
Aug. 16, 2023
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:* versions from (including) 9.14.0 from (excluding) 9.14.3.9 OR *cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:* versions from (including) 9.14.0 from (excluding) 9.14.3.9 -
CPE Deprecation Remap by [email protected]
Aug. 16, 2023
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:* versions from (including) 9.12.0 from (excluding) 9.12.4.29 OR *cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:* versions from (including) 9.12.0 from (excluding) 9.12.4.29 -
CPE Deprecation Remap by [email protected]
Aug. 16, 2023
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:* versions from (including) 9.8.0 from (excluding) 9.8.4.40 OR *cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:* versions from (including) 9.8.0 from (excluding) 9.8.4.40 -
CPE Deprecation Remap by [email protected]
Aug. 16, 2023
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:* versions from (including) 9.16.0 from (excluding) 9.16.2.3 OR *cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:* versions from (including) 9.16.0 from (excluding) 9.16.2.3 -
CPE Deprecation Remap by [email protected]
Aug. 16, 2023
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:* versions from (including) 9.15.0 from (excluding) 9.15.1.17 OR *cpe:2.3:o:cisco:adaptive_security_appliance_software:*:*:*:*:*:*:*:* versions from (including) 9.15.0 from (excluding) 9.15.1.17 -
Reanalysis by [email protected]
Oct. 24, 2022
Action Type Old Value New Value Removed CWE NIST CWE-400 Added CWE NIST CWE-401 -
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-asa-ftd-dos-Unk689XY No Types Assigned https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-ftd-dos-Unk689XY Vendor Advisory Added CWE NIST CWE-400 Added CPE Configuration OR *cpe:2.3:a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:* versions from (including) 9.8.0 up to (excluding) 9.8.4.40 *cpe:2.3:a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:* versions from (including) 9.12.0 up to (excluding) 9.12.4.29 *cpe:2.3:a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:* versions from (including) 9.14.0 up to (excluding) 9.14.3.9 *cpe:2.3:a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:* versions from (including) 9.15.0 up to (excluding) 9.15.1.17 *cpe:2.3:a:cisco:adaptive_security_appliance:*:*:*:*:*:*:*:* versions from (including) 9.16.0 up to (excluding) 9.16.2.3 *cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* versions from (including) 6.4.0 up to (excluding) 6.4.0.13 *cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* versions from (including) 6.6.0 up to (excluding) 6.6.5 *cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* versions from (including) 6.7.0 up to (excluding) 6.7.0.3 *cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* versions from (including) 7.0.0 up to (excluding) 7.0.1 Added CPE Configuration AND OR *cpe:2.3:o:cisco:asa_5512-x_firmware:009.014\(001.150\):*:*:*:*:*:*:* *cpe:2.3:o:cisco:asa_5512-x_firmware:099.017\(001.211\):*:*:*:*:*:*:* *cpe:2.3:o:cisco:asa_5512-x_firmware:099.017\(001.220\):*:*:*:*:*:*:* *cpe:2.3:o:cisco:asa_5512-x_firmware:099.017\(015.050\):*:*:*:*:*:*:* OR cpe:2.3:h:cisco:asa_5512-x:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:cisco:asa_5505_firmware:009.014\(001.150\):*:*:*:*:*:*:* *cpe:2.3:o:cisco:asa_5505_firmware:099.017\(001.211\):*:*:*:*:*:*:* *cpe:2.3:o:cisco:asa_5505_firmware:099.017\(001.220\):*:*:*:*:*:*:* *cpe:2.3:o:cisco:asa_5505_firmware:099.017\(015.050\):*:*:*:*:*:*:* OR cpe:2.3:h:cisco:asa_5505:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:cisco:asa_5515-x_firmware:009.014\(001.150\):*:*:*:*:*:*:* *cpe:2.3:o:cisco:asa_5515-x_firmware:099.017\(001.211\):*:*:*:*:*:*:* *cpe:2.3:o:cisco:asa_5515-x_firmware:099.017\(001.220\):*:*:*:*:*:*:* *cpe:2.3:o:cisco:asa_5515-x_firmware:099.017\(015.050\):*:*:*:*:*:*:* OR cpe:2.3:h:cisco:asa_5515-x:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:cisco:asa_5525-x_firmware:009.014\(001.150\):*:*:*:*:*:*:* *cpe:2.3:o:cisco:asa_5525-x_firmware:099.017\(001.211\):*:*:*:*:*:*:* *cpe:2.3:o:cisco:asa_5525-x_firmware:099.017\(001.220\):*:*:*:*:*:*:* *cpe:2.3:o:cisco:asa_5525-x_firmware:099.017\(015.050\):*:*:*:*:*:*:* OR cpe:2.3:h:cisco:asa_5525-x:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:cisco:asa_5545-x_firmware:009.014\(001.150\):*:*:*:*:*:*:* *cpe:2.3:o:cisco:asa_5545-x_firmware:099.017\(001.211\):*:*:*:*:*:*:* *cpe:2.3:o:cisco:asa_5545-x_firmware:099.017\(001.220\):*:*:*:*:*:*:* *cpe:2.3:o:cisco:asa_5545-x_firmware:099.017\(015.050\):*:*:*:*:*:*:* OR cpe:2.3:h:cisco:asa_5545-x:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:cisco:asa_5555-x_firmware:009.014\(001.150\):*:*:*:*:*:*:* *cpe:2.3:o:cisco:asa_5555-x_firmware:099.017\(001.211\):*:*:*:*:*:*:* *cpe:2.3:o:cisco:asa_5555-x_firmware:099.017\(001.220\):*:*:*:*:*:*:* *cpe:2.3:o:cisco:asa_5555-x_firmware:099.017\(015.050\):*:*:*:*:*:*:* OR cpe:2.3:h:cisco:asa_5555-x:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:cisco:asa_5580_firmware:009.014\(001.150\):*:*:*:*:*:*:* *cpe:2.3:o:cisco:asa_5580_firmware:099.017\(001.211\):*:*:*:*:*:*:* *cpe:2.3:o:cisco:asa_5580_firmware:099.017\(001.220\):*:*:*:*:*:*:* *cpe:2.3:o:cisco:asa_5580_firmware:099.017\(015.050\):*:*:*:*:*:*:* OR cpe:2.3:h:cisco:asa_5580:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:cisco:asa_5585-x_firmware:009.014\(001.150\):*:*:*:*:*:*:* *cpe:2.3:o:cisco:asa_5585-x_firmware:099.017\(001.211\):*:*:*:*:*:*:* *cpe:2.3:o:cisco:asa_5585-x_firmware:099.017\(001.220\):*:*:*:*:*:*:* *cpe:2.3:o:cisco:asa_5585-x_firmware:099.017\(015.050\):*:*:*:*:*:*:* OR cpe:2.3:h:cisco:asa_5585-x:-:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Oct. 27, 2021
Action Type Old Value New Value Changed Description A vulnerability in the memory management of Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper resource management when connection rates are high. An attacker could exploit this vulnerability by opening a significant number of connections on an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition. A vulnerability in the memory management of Cisco Adaptive Security Appliance (ASA) Software and Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper resource management when connection rates are high. An attacker could exploit this vulnerability by opening a significant number of connections on an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-34792 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-2021-34792
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.16 }} 0.02%
score
0.52805
percentile