8.8
HIGH
CVE-2021-1284
"Cisco SD-WAN vManage Authentication Bypass"
Description

A vulnerability in the web-based messaging service interface of Cisco SD-WAN vManage Software could allow an unauthenticated, adjacent attacker to bypass authentication and authorization and modify the configuration of an affected system. To exploit this vulnerability, the attacker must be able to access an associated Cisco SD-WAN vEdge device. This vulnerability is due to insufficient authorization checks. An attacker could exploit this vulnerability by sending crafted HTTP requests to the web-based messaging service interface of an affected system. A successful exploit could allow the attacker to gain unauthenticated read and write access to the affected vManage system. With this access, the attacker could access information about the affected vManage system, modify the configuration of the system, or make configuration changes to devices that are managed by the system.

INFO

Published Date :

May 6, 2021, 1:15 p.m.

Last Modified :

Nov. 7, 2023, 3:27 a.m.

Remotely Exploitable :

No

Impact Score :

5.9

Exploitability Score :

2.8
Affected Products

The following products are affected by CVE-2021-1284 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.

ID Vendor Product Action
1 Cisco catalyst_sd-wan_manager
2 Cisco sd-wan_vmanage
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-2021-1284.

URL Resource
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdw-auth-bypass-65aYqcS2 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-2021-1284 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-1284 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:H/I:H/A:H
    Added CVSS V3.1 Cisco Systems, Inc. AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • CPE Deprecation Remap by [email protected]

    Oct. 16, 2023

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:cisco:sd-wan_vmanage:*:*:*:*:*:*:*:* versions from (including) 20.4 from (excluding) 20.4.1 OR *cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:* versions from (including) 20.4 from (excluding) 20.4.1
  • CPE Deprecation Remap by [email protected]

    Oct. 16, 2023

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:a:cisco:sd-wan_vmanage:*:*:*:*:*:*:*:* versions from (including) 20.5 from (excluding) 20.5.1 OR *cpe:2.3:a:cisco:catalyst_sd-wan_manager:*:*:*:*:*:*:*:* versions from (including) 20.5 from (excluding) 20.5.1
  • Reanalysis by [email protected]

    Aug. 05, 2022

    Action Type Old Value New Value
    Added CWE NIST NVD-CWE-Other
  • Initial Analysis by [email protected]

    May. 14, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:A/AC:L/Au:N/C:P/I:P/A:P)
    Added CVSS V3.1 NIST AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdw-auth-bypass-65aYqcS2 No Types Assigned https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdw-auth-bypass-65aYqcS2 Vendor Advisory
    Added CPE Configuration OR *cpe:2.3:a:cisco:sd-wan_vmanage:*:*:*:*:*:*:*:* versions up to (excluding) 20.3.1 *cpe:2.3:a:cisco:sd-wan_vmanage:*:*:*:*:*:*:*:* versions from (including) 20.4 up to (excluding) 20.4.1 *cpe:2.3:a:cisco:sd-wan_vmanage:*:*:*:*:*:*:*:* versions from (including) 20.5 up to (excluding) 20.5.1
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-1284 is associated with the following CWEs:

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.05 }} -0.00%

score

0.17720

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability