CVE-2021-21551 Dell dbutil Driver: login or permission bypass
In plain words: A door that should be locked is not: part of the system can be reached without a valid login or permission. The attacker gets in as a user or administrator without knowing a password.
Confirmed exploited by CISA on · US federal patch deadline Apr 21, 2022
What to do
- Install Dell's security update for dbutil Driver. If no update exists, follow the vendor's workaround or stop using the product until one ships.
- Keep a list of every internet-facing server you run so nothing is forgotten.
- Patch anything in this catalog first, ahead of normal patch cycles.
- Put admin and file-transfer apps behind a VPN or single sign-on instead of the open internet.
Who is affected
Work IT. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.
What's at risk: Mass data theft and ransomware: a single flaw in a file-transfer or email server has exposed thousands of organisations at once.
The details
- Official name
- Dell dbutil Driver Insufficient Access Control Vulnerability
- Product
- Dell dbutil Driver
- CISA description
- Dell dbutil driver contains an insufficient access control vulnerability which may lead to escalation of privileges, denial-of-service (DoS), or information disclosure.
- Type of flaw
- Login or permission bypass (CWE-782)
- Confirmed exploited
- Mar 31, 2022
- US federal patch deadline
- Apr 21, 2022
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Answering about CVE-2021-21551 ·
Questions about CVE-2021-21551
Is CVE-2021-21551 being exploited?
Yes. CISA added CVE-2021-21551 to its Known Exploited Vulnerabilities catalog on Mar 31, 2022, which means there is reliable evidence of real-world attacks.
How do I fix CVE-2021-21551?
Install Dell's security update for dbutil Driver. If no update exists, follow the vendor's workaround or stop using the product until one ships. Keep a list of every internet-facing server you run so nothing is forgotten.
Am I affected by CVE-2021-21551?
Only if you use Dell dbutil Driver. Aimed mostly at company systems — you are affected through the companies you use, not your own phone.