Stack-based buffer overflow in Cesanta Software Ltd. products - CVE-2011-2900

Vulnerability identifier: #VU2935

CSH Severity: High

CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2011-2900

CWE-ID: CWE-119

Exploitation vector: Remote access

Exploit availability: Public exploit is available

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.

yaSSL
SHTTPD
Mongoose
Fedora
mongoose

Install update from vendor's website:
https://code.google.com/archive/p/mongoose/

mongoose - addressed in versions 2.8-7.el5, 2.8-7.el6

• Exploit #658 - Simple HTTPd 1.42 - PUT Request Remote Buffer Overflow (March 18, 2020)
• Exploit #659 - Simple HTTPd 1.42 - Denial of Servive Exploit (March 18, 2020)

• https://code.google.com/archive/p/mongoose/

• Remote code execution in Cesanta Mongoose
• Fedora EPEL 5 update for mongoose
• Fedora EPEL 6 update for mongoose