#VU66212 Time-of-check Time-of-use (TOCTOU) Race Condition in iDRAC9 - CVE-2021-21539
Published: August 9, 2022
Vulnerability identifier: #VU66212
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-21539
CWE-ID: CWE-367
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
iDRAC9
iDRAC9
Software vendor:
Dell
Dell
Description
The vulnerability allows a remote user to escalate privileges on the system.
The vulnerability exists due to a Time-of-check Time-of-use (TOCTOU) race condition. A remote unauthenticated attacker can exploit this vulnerability to gain elevated privileges when a user with higher privileges is simultaneously accessing iDRAC through the web interface.
Remediation
Install updates from vendor's website.