CVE-2021-1422
"Cisco ASA and FTD DoS Vulnerability"
Description
A vulnerability in the software cryptography module of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an authenticated, remote attacker or an unauthenticated attacker in a man-in-the-middle position to cause an unexpected reload of the device that results in a denial of service (DoS) condition. The vulnerability is due to a logic error in how the software cryptography module handles specific types of decryption errors. An attacker could exploit this vulnerability by sending malicious packets over an established IPsec connection. A successful exploit could cause the device to crash, forcing it to reload. Important: Successful exploitation of this vulnerability would not cause a compromise of any encrypted data. Note: This vulnerability affects only Cisco ASA Software Release 9.16.1 and Cisco FTD Software Release 7.0.0.
INFO
Published Date :
July 16, 2021, 1:15 p.m.
Last Modified :
Nov. 7, 2023, 3:28 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
4.0
Exploitability Score :
3.1
Affected Products
The following products are affected by CVE-2021-1422
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-2021-1422.
| URL | Resource |
|---|---|
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-ftd-ipsec-dos-TFKQbgWC | 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-2021-1422 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-1422 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:L/UI:N/S:C/C:N/I:N/A:H Added CVSS V3.1 Cisco Systems, Inc. AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H -
CPE Deprecation Remap by [email protected]
May. 31, 2022
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:h:cisco:adaptive_security_virtual_appliance:-:*:*:*:*:*:*:* OR *cpe:2.3:a:cisco:adaptive_security_virtual_appliance:-:*:*:*:*:*:*:* -
CPE Deprecation Remap by [email protected]
May. 26, 2022
Action Type Old Value New Value Changed CPE Configuration OR *cpe:2.3:o:cisco:adaptive_security_appliance_software:9.16.1:*:*:*:*:*:*:* OR *cpe:2.3:a:cisco:adaptive_security_appliance_software:9.16.1:*:*:*:*:*:*:* -
Initial Analysis by [email protected]
Aug. 05, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:S/C:N/I:N/A:C) Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H Changed Reference Type https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-ftd-ipsec-dos-TFKQbgWC No Types Assigned https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-ftd-ipsec-dos-TFKQbgWC Vendor Advisory Added CWE NIST CWE-617 Added CPE Configuration AND OR *cpe:2.3:o:cisco:adaptive_security_appliance_software:9.16.1:*:*:*:*:*:*:* *cpe:2.3:o:cisco:firepower_threat_defense:7.0.0.0:*:*:*:*:*:*:* OR cpe:2.3:h:cisco:adaptive_security_virtual_appliance:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:firepower_2100:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:firepower_2110:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:firepower_2120:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:firepower_2130:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:firepower_2140:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:ftd_virtual:-:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-1422 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-2021-1422
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.09 }} 0.00%
score
0.37636
percentile