CVE-2013-2028: f5 nginx Out-of-bounds Write
Vulnerability summary
CVE-2013-2028 is a high (CVSS 7.5) Out-of-bounds Write vulnerability in f5 nginx. EPSS estimates a 87.48% chance of exploitation in the next 30 days, higher than 99.7% of scored vulnerabilities. 6 public exploits are recorded.
Timeline
- 18-07-2013PublishedVulnerability first disclosed.
- 06-08-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
1 score · 1 source · 1 versionEPSS trend
Probability
87.48%
Chance of exploitation in the next 30 days
Percentile
100%
Versus all other CVEs
30-day change
0.00 pp
From 87.48% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
6 foundExploit Reference (packetstormsecurity.com)
Maturity: unknown
Nginx 1.3.9 < 1.4.0 - Denial of Service (PoC)
Maturity: poc
Nginx 1.3.9 < 1.4.0 - Chuncked Encoding Stack Buffer Overflow (Metasploit)
Maturity: weaponized
Show all 6 exploits
Nginx 1.3.9/1.4.0 (x86) - Brute Force
Maturity: poc
Nginx 1.4.0 (Generic Linux x64) - Remote Overflow
Maturity: poc
Nginx HTTP Server 1.3.9-1.4.0 Chunked Encoding Stack Buffer Overflow
exploit/linux/http/nginx_chunked_size
Maturity: weaponized
Weaknesses
CWE · root causeAffected systems
2 vendors · 2 products
References
10 links- mailman.nginx.org/pipermail/nginx-announce/2013/000112.htmlMailing ListX Refsource MLISTMitigationPatchVendor Advisory
- lists.fedoraproject.org/pipermail/package-announce/2013-May/105176.htmlVendor AdvisoryX Refsource FEDORAThird Party Advisory
- packetstormsecurity.com/files/121675/Nginx-1.3.9-1.4.0-Denial-Of-Service.htmlX Refsource MISCExploitThird Party AdvisoryVDB Entry