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 |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: talos
Published: 2021-07-07T16:39:44
Updated: 2021-07-07T17:10:18
Reserved: 2021-01-04T00:00:00
Link: CVE-2021-21787
JSON object: View
NVD Information
Status : Analyzed
Published: 2021-07-07T17:15:07.957
Modified: 2022-07-29T12:58:11.467
Link: CVE-2021-21787
JSON object: View
Redhat Information
No data.
CWE