A privilege escalation vulnerability exists in the way IOBit Advanced SystemCare Ultimate 14.2.0.220 driver handles Privileged I/O write requests. During IOCTL 0x9c40a0d8, the first dword passed in the input buffer is the device port to write to and the byte at offset 4 is the value to write via the OUT instruction. The OUT instruction can write one byte to the given I/O device port, potentially leading to escalated privileges of unprivileged users.
References
| Link | Resource |
|---|---|
| https://talosintelligence.com/vulnerability_reports/TALOS-2021-1254 | Exploit Third Party Advisory |
Configurations
History
15 Jul 2021, 18:45
| Type | Values Removed | Values Added |
|---|---|---|
| CWE | NVD-CWE-Other | |
| CPE | cpe:2.3:a:iobit:advanced_systemcare_ultimate:14.2.0.220:*:*:*:*:*:*:* | |
| CVSS |
v2 : v3 : |
v2 : 4.6
v3 : 8.8 |
| References | (MISC) https://talosintelligence.com/vulnerability_reports/TALOS-2021-1254 - Exploit, Third Party Advisory |
07 Jul 2021, 18:15
| Type | Values Removed | Values Added |
|---|---|---|
| Summary | A privilege escalation vulnerability exists in the way IOBit Advanced SystemCare Ultimate 14.2.0.220 driver handles Privileged I/O write requests. During IOCTL 0x9c40a0d8, the first dword passed in the input buffer is the device port to write to and the byte at offset 4 is the value to write via the OUT instruction. The OUT instruction can write one byte to the given I/O device port, potentially leading to escalated privileges of unprivileged users. |
07 Jul 2021, 17:21
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2021-07-07 17:15
Updated : 2023-12-10 13:55
NVD link : CVE-2021-21787
Mitre link : CVE-2021-21787
CVE.ORG link : CVE-2021-21787
JSON object : View
Products Affected
iobit
- advanced_systemcare_ultimate
CWE