CVE-2021-21788

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Summary

CVECVE-2021-21788
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-07-07 17:15:00 UTC
Updated2022-07-29 12:57:00 UTC
DescriptionA privilege escalation vulnerability exists in the way IOBit Advanced SystemCare Ultimate 14.2.0.220 driver handles Privileged I/O write requests. During IOCTL 0x9c40a0dc, the first dword passed in the input buffer is the device port to write to and the word 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. A local attacker can send a malicious IRP to trigger this vulnerability.

Risk And Classification

Problem Types: NVD-CWE-Other

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Iobit Advanced Systemcare Ultimate 14.2.0.220 All All All

References

ReferenceSourceLinkTags
TALOS-2021-1254 || Cisco Talos Intelligence Group - Comprehensive Threat Intelligence MISC talosintelligence.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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