CVE-2021-21790 — MEDIUM (5.5)

Vulnerability Description

An information disclosure vulnerability exists in the the way IOBit Advanced SystemCare Ultimate 14.2.0.220 driver handles Privileged I/O read requests. A specially crafted I/O request packet (IRP) can lead to privileged reads in the context of a driver which can result in sensitive information disclosure from the kernel. The IN instruction can read two bytes from the given I/O device, potentially leaking sensitive device data to unprivileged users.

CVSS Score

5.5

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Iobit	Advanced Systemcare Ultimate	14.2.0.220

Related Weaknesses (CWE)

CWE-782

References

https://talosintelligence.com/vulnerability_reports/TALOS-2021-1255ExploitThird Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1255ExploitThird Party Advisory

FAQ

What is CVE-2021-21790?

CVE-2021-21790 is a vulnerability with a CVSS score of 5.5 (MEDIUM). An information disclosure vulnerability exists in the the way IOBit Advanced SystemCare Ultimate 14.2.0.220 driver handles Privileged I/O read requests. A specially crafted I/O request packet (IRP) ca...

How severe is CVE-2021-21790?

CVE-2021-21790 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-21790?

Check the references section above for vendor advisories and patch information. Affected products include: Iobit Advanced Systemcare Ultimate.