CVE-2021-21539: Race Condition
First published: Wed Apr 14 2021(Updated: )
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.
Credit: security_alert@emc.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Dell Idrac9 Firmware | <4.40.00.00 |
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Reference Links
Frequently Asked Questions
What is the vulnerability ID for this Dell EMC iDRAC9 vulnerability?
The vulnerability ID for this Dell EMC iDRAC9 vulnerability is CVE-2021-21539.
What is the severity rating of CVE-2021-21539?
The severity rating of CVE-2021-21539 is high with a score of 7.1.
What is the description of CVE-2021-21539?
CVE-2021-21539 is a Time-of-check Time-of-use (TOCTOU) race condition vulnerability in Dell EMC iDRAC9 versions prior to 4.40.00.00, which could allow a remote authenticated attacker to gain elevated privileges.
Which software versions are affected by CVE-2021-21539?
Dell EMC iDRAC9 versions prior to 4.40.00.00 are affected by CVE-2021-21539.
How can the vulnerability be fixed?
To fix CVE-2021-21539, users should update their Dell EMC iDRAC9 firmware to version 4.40.00.00 or newer.
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