| CVE ID | CVE-2021-38408 |
| CVSS SCORE | 9.8, AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| AFFECTED VENDORS |
Advantech |
| AFFECTED PRODUCTS |
WebAccess |
| VULNERABILITY DETAILS |
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Advantech WebAccess. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of IOCTL 0x2711, which can be used to invoke BwFLApp.exe. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of Administrator. |
| ADDITIONAL DETAILS |
Advantech has issued an update to correct this vulnerability. More details can be found at:
https://us-cert.cisa.gov/ics/advisories/icsa-21-245-03 |
| DISCLOSURE TIMELINE |
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| CREDIT | Natnael Samson (@NattiSamson) |
