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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.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade nginx | Aug 30, 2017 | Jul 19, 2013 |
| Freebsd | — | Upgrade nginxUpgrade nginx-devel | Dec 10, 2025 | May 7, 2013 |
| Gentoo Linux | — | Upgrade www-servers/nginx. | Oct 30, 2017 | Jul 19, 2013 |
| Nginx | — | Upgrade to nginx version 1.4.1Upgrade to nginx version 1.5.0 | Jan 27, 2014 | Jul 18, 2013 |
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