CVE-2013-2028

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.

• CWE-787

• http://lists.fedoraproject.org/pipermail/package-announce/2013-May/105176.htmlThird Party Advisory
• http://mailman.nginx.org/pipermail/nginx-announce/2013/000112.htmlMitigation, Patch, Vendor Advisory
• http://nginx.org/download/patch.2013.chunked.txtPatch, Vendor Advisory
• http://packetstormsecurity.com/files/121675/Nginx-1.3.9-1.4.0-Denial-Of-Service.htmlExploit, Third Party Advisory, VDB Entry
• http://secunia.com/advisories/55181Third Party Advisory
• http://security.gentoo.org/glsa/glsa-201310-04.xmlThird Party Advisory
• http://www.osvdb.org/93037Broken Link
• http://www.securityfocus.com/bid/59699Third Party Advisory, VDB Entry
• http://www.vnsecurity.net/2013/05/analysis-of-nginx-cve-2013-2028/Broken Link
• https://github.com/rapid7/metasploit-framework/pull/1834Patch, Third Party Advisory
• http://lists.fedoraproject.org/pipermail/package-announce/2013-May/105176.htmlThird Party Advisory
• http://mailman.nginx.org/pipermail/nginx-announce/2013/000112.htmlMitigation, Patch, Vendor Advisory
• http://nginx.org/download/patch.2013.chunked.txtPatch, Vendor Advisory
• http://packetstormsecurity.com/files/121675/Nginx-1.3.9-1.4.0-Denial-Of-Service.htmlExploit, Third Party Advisory, VDB Entry
• http://secunia.com/advisories/55181Third Party Advisory
• http://security.gentoo.org/glsa/glsa-201310-04.xmlThird Party Advisory
• http://www.osvdb.org/93037Broken Link
• http://www.securityfocus.com/bid/59699Third Party Advisory, VDB Entry
• http://www.vnsecurity.net/2013/05/analysis-of-nginx-cve-2013-2028/Broken Link
• https://github.com/rapid7/metasploit-framework/pull/1834Patch, Third Party Advisory

Published

Jul 20, 2013

Last Modified

Jun 16, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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