CVE-2021-1566
Cisco AMP for Endpoints TLS Certificate Validation Vulnerability (Man-in-the-Middle)
Description
A vulnerability in the Cisco Advanced Malware Protection (AMP) for Endpoints integration of Cisco AsyncOS for Cisco Email Security Appliance (ESA) and Cisco Web Security Appliance (WSA) could allow an unauthenticated, remote attacker to intercept traffic between an affected device and the AMP servers. This vulnerability is due to improper certificate validation when an affected device establishes TLS connections. A man-in-the-middle attacker could exploit this vulnerability by sending a crafted TLS packet to an affected device. A successful exploit could allow the attacker to spoof a trusted host and then extract sensitive information or alter certain API requests.
INFO
Published Date :
June 16, 2021, 6:15 p.m.
Last Modified :
Nov. 7, 2023, 3:28 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.2
Exploitability Score :
2.2
Affected Products
The following products are affected by CVE-2021-1566
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-2021-1566.
| URL | Resource |
|---|---|
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-esa-wsa-cert-vali-n8L97RW | 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-2021-1566 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-1566 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:H/PR:N/UI:N/S:U/C:H/I:H/A:N Added CVSS V3.1 Cisco Systems, Inc. AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N -
Initial Analysis by [email protected]
Jun. 23, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:P/I:P/A:N) Added CVSS V3.1 NIST AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N Changed Reference Type https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-esa-wsa-cert-vali-n8L97RW No Types Assigned https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-esa-wsa-cert-vali-n8L97RW Vendor Advisory Added CWE NIST CWE-295 Added CPE Configuration AND *cpe:2.3:a:cisco:email_security_appliance:-:*:*:*:*:*:*:* *cpe:2.3:o:cisco:asyncos:*:*:*:*:*:*:*:* versions up to (excluding) 12.5.3-035 Added CPE Configuration AND *cpe:2.3:a:cisco:email_security_appliance:-:*:*:*:*:*:*:* *cpe:2.3:o:cisco:asyncos:*:*:*:*:*:*:*:* versions from (including) 13.0 up to (excluding) 13.0.0-030 Added CPE Configuration AND *cpe:2.3:a:cisco:email_security_appliance:-:*:*:*:*:*:*:* *cpe:2.3:o:cisco:asyncos:*:*:*:*:*:*:*:* versions from (including) 13.5 up to (excluding) 13.5.3-010 Added CPE Configuration AND *cpe:2.3:a:cisco:web_security_appliance:-:*:*:*:*:*:*:* *cpe:2.3:o:cisco:asyncos:*:*:*:*:*:*:*:* versions up to (excluding) 11.8.3-021 Added CPE Configuration AND *cpe:2.3:a:cisco:web_security_appliance:-:*:*:*:*:*:*:* *cpe:2.3:o:cisco:asyncos:*:*:*:*:*:*:*:* versions from (including) 12.0.0 up to (excluding) 12.0.3-005 Added CPE Configuration AND *cpe:2.3:a:cisco:web_security_appliance:-:*:*:*:*:*:*:* *cpe:2.3:o:cisco:asyncos:*:*:*:*:*:*:*:* versions from (including) 12.5.0 up to (excluding) 12.5.1-043
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-1566 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-2021-1566
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.14 }} 0.00%
score
0.50240
percentile