7.8
HIGH
CVE-2021-21999
VMware Tools for Windows and VMware Remote Console Local Privilege Escalation
Description

VMware Tools for Windows (11.x.y prior to 11.2.6), VMware Remote Console for Windows (12.x prior to 12.0.1) , VMware App Volumes (2.x prior to 2.18.10 and 4 prior to 2103) contain a local privilege escalation vulnerability. An attacker with normal access to a virtual machine may exploit this issue by placing a malicious file renamed as `openssl.cnf' in an unrestricted directory which would allow code to be executed with elevated privileges.

INFO

Published Date :

June 23, 2021, 12:15 p.m.

Last Modified :

Nov. 21, 2024, 5:49 a.m.

Remotely Exploitable :

No

Impact Score :

5.9

Exploitability Score :

1.8
Public PoC/Exploit Available at Github

CVE-2021-21999 has a 1 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2021-21999 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 Vmware tools
2 Vmware app_volumes
3 Vmware remote_console
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-2021-21999.

URL Resource
https://www.vmware.com/security/advisories/VMSA-2021-0013.html Patch Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-754/ Third Party Advisory VDB Entry
https://www.vmware.com/security/advisories/VMSA-2021-0013.html Patch Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-754/ Third Party Advisory VDB Entry

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).

None

Updated: 2 weeks, 2 days ago
6 stars 0 fork 0 watcher
Born at : Feb. 23, 2023, 5:42 a.m. This repo has been linked 462 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-21999 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-21999 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://www.vmware.com/security/advisories/VMSA-2021-0013.html
    Added Reference https://www.zerodayinitiative.com/advisories/ZDI-21-754/
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CWE Remap by [email protected]

    Jul. 12, 2022

    Action Type Old Value New Value
    Changed CWE CWE-20 CWE-427
  • Initial Analysis by [email protected]

    Jun. 30, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:C/I:C/A:C)
    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.vmware.com/security/advisories/VMSA-2021-0013.html No Types Assigned https://www.vmware.com/security/advisories/VMSA-2021-0013.html Patch, Vendor Advisory
    Changed Reference Type https://www.zerodayinitiative.com/advisories/ZDI-21-754/ No Types Assigned https://www.zerodayinitiative.com/advisories/ZDI-21-754/ Third Party Advisory, VDB Entry
    Added CWE NIST CWE-20
    Added CPE Configuration OR *cpe:2.3:a:vmware:app_volumes:*:*:*:*:*:*:*:* versions from (including) 2.0 up to (excluding) 2.18.10 *cpe:2.3:a:vmware:app_volumes:*:*:*:*:*:*:*:* versions from (including) 4 up to (excluding) 2103 *cpe:2.3:a:vmware:remote_console:*:*:*:*:*:windows:*:* versions from (including) 12.0.0 up to (excluding) 12.0.1 *cpe:2.3:a:vmware:tools:*:*:*:*:*:windows:*:* versions from (including) 11.0.0 up to (excluding) 11.2.6
  • CVE Modified by [email protected]

    Jun. 23, 2021

    Action Type Old Value New Value
    Added Reference https://www.zerodayinitiative.com/advisories/ZDI-21-754/ [No Types Assigned]
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-2021-21999 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-2021-21999 weaknesses.

Exploit Prediction

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

0.04 }} 0.00%

score

0.12654

percentile

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