UTT HiPER 840G Buffer Overflow Vulnerability in aspApBasicConfigUrcp

A critical buffer overflow vulnerability has been identified in the UTT HiPER 840G router, affecting versions through 3.1.1-190328. The issue arises in the file '/goform/aspApBasicConfigUrcp', where the 'Username' argument can be manipulated, leading to a buffer overflow. This vulnerability can be exploited remotely, and a public exploit is available.

Impact

Exploitation of this vulnerability causes a buffer overflow, which can lead to arbitrary code execution or a denial-of-service condition.

Reproduction

The vulnerability can be reproduced by sending a crafted request to the '/goform/aspApBasicConfigUrcp' endpoint, manipulating the 'Username' parameter to trigger the buffer overflow. This can be done remotely, taking advantage of the lack of input validation in the application's handling of the 'Username' argument.