Detections
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Dell iDRAC9 Time-of-check Time-of-use Race Condition (CVE-2021-21539)

high Tenable OT Security Plugin ID 501929

Synopsis

The remote OT asset is affected by a vulnerability.

Description

Dell EMC iDRAC9 versions prior to 4.40.00.00 contain a Time-of-check Time-of-use (TOCTOU) race condition vulnerability. A remote authenticated attacker could potentially exploit this vulnerability to gain elevated privileges when a user with higher privileges is simultaneously accessing iDRAC through the web interface.

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.

Solution

Refer to the vendor advisory.

See Also

https://www.dell.com/support/kbdoc/000185293

Plugin Details

Severity: High

ID: 501929

Version: 1.2

Type: remote

Family: Tenable.ot

Published: 1/17/2024

Updated: 4/22/2024

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.4

Vector: CVSS2#AV:N/AC:H/Au:S/C:P/I:P/A:P

CVSS Score Source: CVE-2021-21539

CVSS v3

Risk Factor: High

Base Score: 7.1

Temporal Score: 6.2

Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:dell:idrac9_firmware

Required KB Items: Tenable.ot/Dell

Exploit Ease: No known exploits are available

Patch Publication Date: 4/30/2021

Vulnerability Publication Date: 4/30/2021

Reference Information

CVE: CVE-2021-21539

CWE: 367