CVE-2013-2028 - Nginx HTTP Server 1.3.9-1.4.0 Chunked Encoding Stack Buffer Overflow

Description

The ngx_http_parse_chunked function in http/ngx_http_parse.c in nginx 1.3.9 through 1.4.0 allows remote attackers to cause a denial of service (crash) and execute arbitrary code via a chunked Transfer-Encoding request with a large chunk size, which triggers an integer signedness error and a stack-based buffer overflow.

Example

$ python3 nginx_cve_2013_2028_checker.py http://172.17.0.3
[!] Target: http://172.17.0.3 Nginx version: 1.4.0 Vulnerable: True

Exploits

• https://github.com/danghvu/nginx-1.4.0
• https://github.com/m4drat/CVE-2013-2028-Exploit
• https://www.rapid7.com/db/modules/exploit/linux/http/nginx_chunked_size
• http://www.scs.stanford.edu/brop/

References

• https://nvd.nist.gov/vuln/detail/CVE-2013-2028