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9.3
HIGH CVSS 2.0
CVE-2021-1433
Cisco IOS XE SD-WAN Software vDaemon Buffer Overflow Vulnerability
Description

A vulnerability in the vDaemon process in Cisco IOS XE SD-WAN Software could allow an unauthenticated, remote attacker to cause a buffer overflow on an affected device. This vulnerability is due to insufficient bounds checking when the device processes traffic. An attacker could exploit this vulnerability by sending crafted traffic to the device. The attacker must have a man-in-the-middle position between Cisco vManage and an associated device that is running an affected version of Cisco IOS XE SD-WAN Software. An exploit could allow the attacker to conduct a controllable buffer overflow attack (and possibly execute arbitrary commands as the root user) or cause a device reload, resulting in a denial of service (DoS) condition.

INFO

Published Date :

March 24, 2021, 8:15 p.m.

Last Modified :

Nov. 21, 2024, 5:44 a.m.

Remotely Exploit :

Yes !

Source :

[email protected]
Affected Products

The following products are affected by CVE-2021-1433 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 ios_xe
: Total Affected Vendor : 1 | Products : 1
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 2.0 HIGH [email protected]
CVSS 3.1 HIGH [email protected]
CVSS 3.1 HIGH [email protected]
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-2021-1433.

URL Resource
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-buffover-CqdRWLc Vendor Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-buffover-CqdRWLc Vendor Advisory
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-1433 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-2021-1433 weaknesses.

CAPEC-8: Buffer Overflow in an API Call Buffer Overflow in an API Call CAPEC-9: Buffer Overflow in Local Command-Line Utilities Buffer Overflow in Local Command-Line Utilities CAPEC-10: Buffer Overflow via Environment Variables Buffer Overflow via Environment Variables CAPEC-14: Client-side Injection-induced Buffer Overflow Client-side Injection-induced Buffer Overflow CAPEC-24: Filter Failure through Buffer Overflow Filter Failure through Buffer Overflow CAPEC-42: MIME Conversion MIME Conversion CAPEC-44: Overflow Binary Resource File Overflow Binary Resource File CAPEC-45: Buffer Overflow via Symbolic Links Buffer Overflow via Symbolic Links CAPEC-46: Overflow Variables and Tags Overflow Variables and Tags CAPEC-47: Buffer Overflow via Parameter Expansion Buffer Overflow via Parameter Expansion CAPEC-100: Overflow Buffers Overflow Buffers CAPEC-123: Buffer Manipulation Buffer Manipulation

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-2021-1433 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2021-1433 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 af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-buffover-CqdRWLc
  • 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:H
    Added CVSS V3.1 Cisco Systems, Inc. AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  • Initial Analysis by [email protected]

    Mar. 29, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:C/I:C/A:C)
    Added CVSS V3.1 NIST AV:N/AC:H/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-iosxe-buffover-CqdRWLc No Types Assigned https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-buffover-CqdRWLc Vendor Advisory
    Added CPE Configuration OR *cpe:2.3:o:cisco:ios_xe:3.15.1xbs:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:3.15.2xbs:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.12.1:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.12.1a:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.12.1c:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.12.1s:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.12.1t:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.12.1w:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.12.1x:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.12.1y:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.12.1z:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.12.1za:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.12.2:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.12.2a:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.12.2s:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.12.2t:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.12.3:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.12.3a:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:16.12.3s:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:17.2.1:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:17.2.1a:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:17.2.1r:*:*:*:*:*:*:* *cpe:2.3:o:cisco:ios_xe:17.2.1v:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Mar. 24, 2021

    Action Type Old Value New Value
    Changed Description A vulnerability in the vDaemon process in Cisco IOS XE SD-WAN Software could allow an unauthenticated, remote attacker to cause a buffer overflow on an affected device. This vulnerability is due to insufficient bounds checking when the device processes traffic. An attacker could exploit this vulnerability by sending crafted traffic to the device. The attacker must have a man-in-the-middle position between Cisco vManage and an associated device that is running an affected version of Cisco IOS XE SD-WAN Software. An exploit could allow the attacker to conduct a controllable buffer overflow attack (and possibly execute arbitrary commands as the root user) or cause a device reload, resulting in a denial of service (DoS) condition. A vulnerability in the vDaemon process in Cisco IOS XE SD-WAN Software could allow an unauthenticated, remote attacker to cause a buffer overflow on an affected device. This vulnerability is due to insufficient bounds checking when the device processes traffic. An attacker could exploit this vulnerability by sending crafted traffic to the device. The attacker must have a man-in-the-middle position between Cisco vManage and an associated device that is running an affected version of Cisco IOS XE SD-WAN Software. An exploit could allow the attacker to conduct a controllable buffer overflow attack (and possibly execute arbitrary commands as the root user) or cause a device reload, resulting in a denial of service (DoS) condition.
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.
Vulnerability Scoring Details
Base CVSS Score: 8.1
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact
Base CVSS Score: 9.3
Access Vector
Access Complexity
Authentication
Confidentiality Impact
Integrity Impact
Availability Impact
Exploit Prediction

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

0.88 }} 0.22%

score

0.74478

percentile