CVE-2021-1521
Cisco Video Surveillance 8000 Series IP Cameras Cisco Discovery Protocol Adjacent Reload Vulnerability
Description
A vulnerability in the Cisco Discovery Protocol implementation for Cisco Video Surveillance 8000 Series IP Cameras could allow an unauthenticated, adjacent attacker to cause an affected IP camera to reload. This vulnerability is due to missing checks when processing Cisco Discovery Protocol messages. An attacker could exploit this vulnerability by sending a malicious Cisco Discovery Protocol packet to an affected IP camera. A successful exploit could allow the attacker to cause the affected IP camera to reload unexpectedly, resulting in a denial of service (DoS) condition. Note: Cisco Discovery Protocol is a Layer 2 protocol. To exploit this vulnerability, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent).
INFO
Published Date :
May 6, 2021, 1:15 p.m.
Last Modified :
Nov. 7, 2023, 3:28 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
2.8
Affected Products
The following products are affected by CVE-2021-1521
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-2021-1521.
| URL | Resource |
|---|---|
| https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ipcameras-dos-fc3F6LzT | 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-2021-1521 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-1521 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:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Added CVSS V3.1 Cisco Systems, Inc. AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H -
Initial Analysis by [email protected]
May. 17, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:A/AC:L/Au:N/C:N/I:N/A:C) Added CVSS V3.1 NIST AV:A/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-ipcameras-dos-fc3F6LzT No Types Assigned https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ipcameras-dos-fc3F6LzT Vendor Advisory Added CPE Configuration AND OR *cpe:2.3:o:cisco:video_surveillance_8400_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.9-11 OR cpe:2.3:h:cisco:video_surveillance_8400:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:cisco:video_surveillance_8000p_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.9-11 OR cpe:2.3:h:cisco:video_surveillance_8000p:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:cisco:video_surveillance_8020_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.9-11 OR cpe:2.3:h:cisco:video_surveillance_8020:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:cisco:video_surveillance_8030_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.9-11 OR cpe:2.3:h:cisco:video_surveillance_8030:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:cisco:video_surveillance_8070_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.9-11 OR cpe:2.3:h:cisco:video_surveillance_8070:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:cisco:video_surveillance_8620_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.9-11 OR cpe:2.3:h:cisco:video_surveillance_8620:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:cisco:video_surveillance_8630_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.9-11 OR cpe:2.3:h:cisco:video_surveillance_8630:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:cisco:video_surveillance_8930_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.9-11 OR cpe:2.3:h:cisco:video_surveillance_8930:-:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-1521 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-2021-1521
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.06 }} 0.01%
score
0.22805
percentile