Vulnerability Details : CVE-2021-23892
By exploiting a time of check to time of use (TOCTOU) race condition during the Endpoint Security for Linux Threat Prevention and Firewall (ENSL TP/FW) installation process, a local user can perform a privilege escalation attack to obtain administrator privileges for the purpose of executing arbitrary code through insecure use of predictable temporary file locations.
Vulnerability category: Gain privilege
Products affected by CVE-2021-23892
- Mcafee » Endpoint Security For Linux Threat Prevention » For LinuxVersions from including (>=) 10.5.0 and before (<) 10.7.5cpe:2.3:o:mcafee:endpoint_security_for_linux_threat_prevention:*:*:*:*:*:linux:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-23892
0.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 6 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-23892
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.9
|
MEDIUM | AV:L/AC:M/Au:N/C:C/I:C/A:C |
3.4
|
10.0
|
NIST | |
|
7.0
|
HIGH | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
1.0
|
5.9
|
NIST | |
|
8.2
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H |
1.5
|
6.0
|
McAfee (DEFUNCT) |
CWE ids for CVE-2021-23892
-
The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.Assigned by: psirt@mcafee.com (Primary)
-
The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. This can cause the product to perform invalid actions when the resource is in an unexpected state.Assigned by: nvd@nist.gov (Secondary)
References for CVE-2021-23892
-
https://kc.mcafee.com/corporate/index?page=content&id=SB10355
McAfee Security Bulletin - Endpoint Security for Linux Threat Prevention and Firewall installer update fixes one vulnerability (CVE-2021-23892)Vendor Advisory
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