CVE-2013-2028

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.

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

Metasploit 1 module

Nginx HTTP Server 1.3.9-1.4.0 Chunked Encoding Stack Buffer Overflow
exploit/linux/http/nginx_chunked_size

Exploit-DB 4

Nginx 1.4.0 (Generic Linux x64) - Remote Overflow EDB-32277 · remote · Mar 15, 2014
Nginx 1.3.9/1.4.0 (x86) - Brute Force EDB-26737 · remote · Jul 11, 2013
Nginx 1.3.9 < 1.4.0 - Chuncked Encoding Stack Buffer Overflow (Metasploit) EDB-25775 · remote · May 28, 2013 · verified
Nginx 1.3.9 < 1.4.0 - Denial of Service (PoC) EDB-25499 · dos · May 17, 2013

GitHub 8 repositories

kitctf/nginxpwn ★ 55 · Mar 23, 2016

Exploitation Training -- CVE-2013-2028: Nginx Stack Based Buffer Overflow
danghvu/nginx-1.4.0 ★ 30 · May 21, 2013

For the analysis of CVE-2013-2028
m4drat/CVE-2013-2028-Exploit ★ 19 · Jun 27, 2020

CVE-2013-2028 python exploit
tachibana51/CVE-2013-2028-x64-bypass-ssp-and-pie-PoC ★ 2 · Aug 3, 2019

this is not stable
jptr218/nginxhack ★ 1 · Jul 8, 2021

A CVE-2013-2028 implementation
vanivamshi/CVE-2013-2028-Exploit ★ 0 · Sep 12, 2026
xiw1ll/CVE-2013-2028_Checker ★ 0 · Jul 23, 2024

Tool for checking Nginx CVE-2013-2028
Sunqiz/CVE-2013-2028-reproduction ★ 0 · Aug 15, 2022

CVE-2013-2028复现

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

References

[nginx-announce] 20130507 nginx security advisory (CVE-2013-2028) mailing-list
93037 vdb-entry
FEDORA-2013-7560 vendor-advisory
http://www.vnsecurity.net/2013/05/analysis-of-nginx-cve-2013-2028/
55181 third-party-advisory
59699 vdb-entry
GLSA-201310-04 vendor-advisory
https://github.com/rapid7/metasploit-framework/pull/1834
http://nginx.org/download/patch.2013.chunked.txt
http://packetstormsecurity.com/files/121675/Nginx-1.3.9-1.4.0-Denial-Of-Service.html