The nvcoaft51 driver in Norman Virus Control (NVC) 5.82 uses weak permissions (unrestricted write access) for the NvcOa device, which allows local users to gain privileges by (1) triggering a buffer overflow in a kernel pool via a string argument to ioctl 0xBF67201C; or by (2) sending a crafted KEVENT structure through ioctl 0xBF672028 to overwrite arbitrary memory locations.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| http://www.securityfocus.com/archive/1/478224/100/0/threaded | mailing list |
| http://www.securitytracker.com/id?1018636 | vdb entry |
| http://www.securityfocus.com/bid/25499 | vdb entry |
| http://securityreason.com/securityalert/3087 | third party advisory |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/36373 | vdb entry |
| http://www.48bits.com/exploits/nvc.rar | exploit |