7.8
HIGH
CVE-2021-22716
C-Bus Toolkit Insecure Resource Assignment Remote Code Execution
Description

A CWE-732: Incorrect Permission Assignment for Critical Resource vulnerability exists that could allow remote code execution when an unprivileged user modifies a file. Affected Product: C-Bus Toolkit (V1.15.9 and prior)

INFO

Published Date :

April 13, 2021, 7:15 p.m.

Last Modified :

Nov. 18, 2022, 11:15 p.m.

Remotely Exploitable :

No

Impact Score :

5.9

Exploitability Score :

1.8
Affected Products

The following products are affected by CVE-2021-22716 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 Schneider-electric c-bus_toolkit
References to Advisories, Solutions, and Tools

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-2021-22716 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-22716 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. 18, 2022

    Action Type Old Value New Value
    Changed Description A CWE-269: Improper Privilege Management vulnerability exists in C-Bus Toolkit (V1.15.7 and prior) that could allow a remote code execution when an unprivileged user modifies a file. A CWE-732: Incorrect Permission Assignment for Critical Resource vulnerability exists that could allow remote code execution when an unprivileged user modifies a file. Affected Product: C-Bus Toolkit (V1.15.9 and prior)
    Added CVSS V3.1 Schneider Electric SE AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Removed Reference https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-103-01 [Vendor Advisory]
    Removed Reference https://www.zerodayinitiative.com/advisories/ZDI-21-562/ [Third Party Advisory, VDB Entry]
    Added Reference https://us-cert.cisa.gov/ics/advisories/icsa-21-105-01 [No Types Assigned]
    Added Reference https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-103-01&p_enDocType=Security+and+Safety+Notice&p_File_Name=SEVD-2021-103-01_C-Bus_Toolkit_C-Gate_Server_Security_Notification.pdf [No Types Assigned]
    Removed CWE Schneider Electric SE CWE-269
    Added CWE Schneider Electric SE CWE-732
    Removed CWE Reason CWE-269 / More specific CWE option available
  • Reanalysis by [email protected]

    Sep. 03, 2022

    Action Type Old Value New Value
    Added CWE NIST CWE-732
  • Modified Analysis by [email protected]

    Jun. 02, 2021

    Action Type Old Value New Value
    Removed CVSS V2 NIST (AV:N/AC:L/Au:S/C:P/I:P/A:P)
    Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:P/I:P/A:P)
    Removed CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://www.zerodayinitiative.com/advisories/ZDI-21-562/ No Types Assigned https://www.zerodayinitiative.com/advisories/ZDI-21-562/ Third Party Advisory, VDB Entry
  • CVE Modified by [email protected]

    May. 11, 2021

    Action Type Old Value New Value
    Added Reference https://www.zerodayinitiative.com/advisories/ZDI-21-562/ [No Types Assigned]
  • Initial Analysis by [email protected]

    Apr. 21, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:S/C:P/I:P/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-103-01 No Types Assigned https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-103-01 Vendor Advisory
    Added CPE Configuration OR *cpe:2.3:a:schneider-electric:c-bus_toolkit:*:*:*:*:*:*:*:* versions up to (including) 1.15.7
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.
Exploit Prediction

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

0.10 }} -0.01%

score

0.41459

percentile

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