CVE-2021-21539 Race condition in Integrated Dell Remote Access Controller (iDRAC)
Remote authenticated attackers can exploit a race condition in Dell iDRAC9 to gain elevated privileges during concurrent web interface access.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2021-21539?
CVE-2021-21539 is a medium-severity vulnerability in Integrated Dell Remote Access Controller (iDRAC), published on 30 Apr 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-367
Which versions are affected by CVE-2021-21539?
It affects 1 product.
Products include Dell Idrac9 Firmware.
How do I fix CVE-2021-21539?
No fix has been published for CVE-2021-21539 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-21539 being exploited?
There is no known exploitation of CVE-2021-21539 in the wild and no public exploit code.
Other vulnerabilities in Integrated Dell Remote Access Controller (iDRAC)
- CVE-2021-21538 Auth bypass in Integrated Dell Remote Access Controller (iDRAC)
- CVE-2019-3706 Web Interface Authentication Bypass Vulnerability
- CVE-2019-3707 WS-MAN Authentication Bypass Vulnerability
- CVE-2020-5366 Path traversal in Integrated Dell Remote Access Controller (iDRAC)
- CVE-2018-1249 Security feature bypass in iDRAC9
Sources
Also known as GHSA-mvg3-9cx3-qjv5.