Title: Norman Virus Control NVCOAFT51.SYS Driver Multiple Vulnerabilities
Severity: HIGH
Description:
Norman Virus Control is a security application available for Linux and Microsoft Windows.
The application is prone to multiple vulnerabilities residing in the 'nvcoaft51.sys' driver.
A buffer-overflow vulnerability affecting heap-based kernel memory resides the 'Nvc0a' device (created by the driver). This issue occurs because the software fails to adequately bounds-check user-supplied Unicode characters via the IOCTL 0xBF67201C. Supplying a string between 511 and 1017 Unicode characters will corrupt memory.
Multiple input-validation vulnerabilities affect various IOCTL control codes, including 0xBF672028. Data supplied by the controls is not validated before it's used as a pointer to a 'KEVENT' structure that is sent to 'KeSetEvent'. Attackers can leverage this issue by supplying the address of a specially crafted 'KEVENT' structure designed to carry out some actions on their behalf. Information about the other affected IOCTLs is unavailable at this time.
Attackers can exploit these issues to execute arbitrary code with SYSTEM-level privileges. Successful exploits will completely compromise affected computers. Failed attacks will likely cause denial-of-service conditions.
Norman Virus Control 5.82 is vulnerable; other versions may also be affected.
NOTE: Other Norman products may also use the affected driver.
Affected Products:
- Norman Virus Control 5.82
References:
- Norman Ramsey: Noweb Homepage
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