Executive Summary
This Alert is flagged as TOP 25 Common Weakness Enumeration from CWE/SANS. For more information, you can read this.
| Informations | |||
|---|---|---|---|
| Name | CVE-2021-4034 | First vendor Publication | 2022-01-28 |
| Vendor | Cve | Last vendor Modification | 2023-11-07 |
Security-Database Scoring CVSS v3
| Cvss vector : CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | |||
|---|---|---|---|
| Overall CVSS Score | 7.8 | ||
| Base Score | 7.8 | Environmental Score | 7.8 |
| impact SubScore | 5.9 | Temporal Score | 7.8 |
| Exploitabality Sub Score | 1.8 | ||
| Attack Vector | Local | Attack Complexity | Low |
| Privileges Required | Low | User Interaction | None |
| Scope | Unchanged | Confidentiality Impact | High |
| Integrity Impact | High | Availability Impact | High |
| Calculate full CVSS 3.0 Vectors scores | |||
Security-Database Scoring CVSS v2
| Cvss vector : (AV:L/AC:L/Au:N/C:C/I:C/A:C) | |||
|---|---|---|---|
| Cvss Base Score | 7.2 | Attack Range | Local |
| Cvss Impact Score | 10 | Attack Complexity | Low |
| Cvss Expoit Score | 3.9 | Authentication | None Required |
| Calculate full CVSS 2.0 Vectors scores | |||
Detail
| A local privilege escalation vulnerability was found on polkit's pkexec utility. The pkexec application is a setuid tool designed to allow unprivileged users to run commands as privileged users according predefined policies. The current version of pkexec doesn't handle the calling parameters count correctly and ends trying to execute environment variables as commands. An attacker can leverage this by crafting environment variables in such a way it'll induce pkexec to execute arbitrary code. When successfully executed the attack can cause a local privilege escalation given unprivileged users administrative rights on the target machine. |
Original Source
| Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-4034 |
CWE : Common Weakness Enumeration
| % | Id | Name |
|---|---|---|
| 50 % | CWE-787 | Out-of-bounds Write (CWE/SANS Top 25) |
| 50 % | CWE-125 | Out-of-bounds Read |
CPE : Common Platform Enumeration
| Type | Description | Count |
|---|---|---|
| Application | 2 | |
| Application | 1 | |
| Application | 3 | |
| Application | 2 | |
| Application | 1 | |
| Application | 1 | |
| Application | 1 | |
| Application | 1 | |
| Application | 1 | |
| Application | 1 | |
| Application | 1 | |
| Application | 1 | |
| Os | 5 | |
| Os | 1 | |
| Os | 1 | |
| Os | 1 | |
| Os | 2 | |
| Os | 2 | |
| Os | 1 | |
| Os | 2 | |
| Os | 3 | |
| Os | 1 | |
| Os | 2 | |
| Os |
| 6 |
| Os | 1 | |
| Os | 4 | |
| Os | 3 | |
| Os | 1 | |
| Os | 1 | |
| Os | 2 | |
| Os | 1 |
SAINT Exploits
| Description | Link |
|---|---|
| Polkit pkexec privilege elevation | More info here |
Metasploit Database
| id | Description |
|---|---|
| 2022-01-25 | Local Privilege Escalation in polkits pkexec |
Sources (Detail)
Alert History
| Date | Informations |
|---|---|
| 2023-11-07 21:32:59 |
|
| 2023-10-18 09:27:52 |
|
| 2023-09-12 00:28:02 |
|
| 2023-02-14 05:27:33 |
|
| 2023-02-03 05:27:39 |
|
| 2022-10-25 21:27:29 |
|
| 2022-10-12 05:27:33 |
|
| 2022-10-05 21:27:34 |
|
| 2022-06-14 17:27:25 |
|
| 2022-04-20 09:23:08 |
|
| 2022-04-18 13:23:08 |
|
| 2022-04-14 21:23:08 |
|
| 2022-03-05 00:23:10 |
|
| 2022-03-04 00:23:09 |
|
| 2022-03-03 17:22:57 |
|
| 2022-01-31 21:22:53 |
|
| 2022-01-29 09:22:53 |
|
| 2022-01-29 00:22:52 |
|
