Home/CVE/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 cau
CVE

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 cau

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.

HIGH · CVSS 7.5 EPSS 0.93039
Act now
  • EPSS ≥ 0.50 - high probability of exploitation in the next 30 days
  • EPSS percentile: top 0% of all CVEs by exploitation likelihood
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules1 YARA rules0
⬡

Weakness Classification

CWE-787Out-of-bounds Write
▤

Affected Products & Versions

2
f5 nginx>= 1.3.9 and <= 1.4.0
fedoraproject fedoraall versions
⚠

Public Exploits & PoCs

5
remoteNginx 1.4.0 (Generic Linux x64) - Remote Overflow2014-03-15
remoteNginx 1.3.9/1.4.0 (x86) - Brute Force2013-07-11
remoteNginx 1.3.9 < 1.4.0 - Chuncked Encoding Stack Buffer Overflow (Metasploit)verified
dosNginx 1.3.9 < 1.4.0 - Denial of Service (PoC)2013-05-17
pocpacketstormsecurity.com · Nginx-1.3.9-1.4.0-Denial-Of-Service.htmlpacketstormsecurity.com
◈

Sigma Hunt Rules

1
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighNginx Core Dump
▣

Scoring & Timeline

7.5
HIGH · CVSS v2 (legacy) · secalert@redhat.com
View on NVD
This CVE predates CVSS v3; the legacy v2 score is shown so triage still has a severity to work with.
v2 Vector
AV:N/AC:L/Au:N/C:P/I:P/A:P
Published to NVD20 Jul 2013 · 03:37 AM
⚑

Vendor Advisories

1
suse-csafopenSUSE-SU-2024:10044-1
🔗

References & Sources

9
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://lists.fedoraproject.org/pipermail/package-announce/2013-May/105176.htmlThird Party Advisory
http://mailman.nginx.org/pipermail/nginx-announce/2013/000112.htmlMitigationPatchVendor Advisory
http://nginx.org/download/patch.2013.chunked.txtPatchVendor Advisory
http://secunia.com/advisories/55181Third Party Advisory
http://security.gentoo.org/glsa/glsa-201310-04.xmlThird Party Advisory
http://www.osvdb.org/93037Broken Link
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