Zero-day vulnerability in Mongoose

Stack-based buffer overflow

The vulnerability is being exploited in the wild against Ubiquisys routers. Fully functional exploit code was made publicly available on August 2, 2011.

Vulnerability details

Advisory: SB2011080301 - Remote code execution in Valenok Mongoose

Vulnerable component: Mongoose

CVE-ID: CVE-2011-2900

CVSSv3 score: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:F/RL:O/RC:C

CWE-ID: CWE-119 - Memory corruption


The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The weakness exists due to stack-based buffer overflow, caused by improper bounds checking by the put_dir() function when processing malicious requests. A remote attacker can send a specially crafted HTTP PUT request, trigger memory corruption and execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability results in arbitrary code execution on the vulnerable system.

Note: the vulnerability was being actively exploited.

Public Exploits: