Vulnerability Monitor

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CVE-2009-3896

src/http/ngx_http_parse.c in nginx (aka Engine X) 0.1.0 through 0.4.14, 0.5.x before 0.5.38, 0.6.x before 0.6.39, 0.7.x before 0.7.62, and 0.8.x before 0.8.14 allows remote attackers to cause a denial of service (NULL pointer dereference and worker process crash) via a long URI.

Security Impact Summary

CVE-2009-3896 is a security vulnerability that . Impacting 2 products from f5, from nginx organizations running these solutions should prioritize assessment and patching.

Historical Context

Originally identified in 2009, this vulnerability predates many modern security frameworks and practices. The vulnerability landscape of that era was characterized by different threat models and less mature defense mechanisms compared to contemporary standards.

Published

2009-11-24T17:30:00.377

Last Modified

2025-04-09T00:30:58.490

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 5.0 (MEDIUM)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Primary
CWE-119

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	f5	nginx	0.1.0	Yes
Application	f5	nginx	0.1.1	Yes
Application	f5	nginx	0.1.2	Yes
Application	f5	nginx	0.1.3	Yes
Application	f5	nginx	0.1.4	Yes
Application	f5	nginx	0.1.5	Yes
Application	f5	nginx	0.1.6	Yes
Application	f5	nginx	0.1.7	Yes
Application	f5	nginx	0.1.8	Yes
Application	f5	nginx	0.1.9	Yes
Application	f5	nginx	0.1.10	Yes
Application	f5	nginx	0.1.11	Yes
Application	f5	nginx	0.1.12	Yes
Application	f5	nginx	0.1.13	Yes
Application	f5	nginx	0.1.14	Yes
Application	f5	nginx	0.1.15	Yes
Application	f5	nginx	0.1.16	Yes
Application	f5	nginx	0.1.17	Yes
Application	f5	nginx	0.1.18	Yes
Application	f5	nginx	0.1.19	Yes
Application	f5	nginx	0.1.20	Yes
Application	f5	nginx	0.1.21	Yes
Application	f5	nginx	0.1.22	Yes
Application	f5	nginx	0.1.23	Yes
Application	f5	nginx	0.1.24	Yes
Application	f5	nginx	0.1.25	Yes
Application	f5	nginx	0.1.26	Yes
Application	f5	nginx	0.1.27	Yes
Application	f5	nginx	0.1.28	Yes
Application	f5	nginx	0.1.29	Yes
Application	f5	nginx	0.1.30	Yes
Application	f5	nginx	0.1.31	Yes
Application	f5	nginx	0.1.32	Yes
Application	f5	nginx	0.1.33	Yes
Application	f5	nginx	0.1.34	Yes
Application	f5	nginx	0.1.35	Yes
Application	f5	nginx	0.1.36	Yes
Application	f5	nginx	0.1.37	Yes
Application	f5	nginx	0.1.38	Yes
Application	f5	nginx	0.1.39	Yes
Application	f5	nginx	0.1.40	Yes
Application	f5	nginx	0.1.41	Yes
Application	f5	nginx	0.1.42	Yes
Application	f5	nginx	0.1.43	Yes
Application	f5	nginx	0.1.44	Yes
Application	f5	nginx	0.1.45	Yes
Application	f5	nginx	0.2.0	Yes
Application	f5	nginx	0.2.1	Yes
Application	f5	nginx	0.2.2	Yes
Application	f5	nginx	0.2.3	Yes
Application	f5	nginx	0.2.4	Yes
Application	f5	nginx	0.2.5	Yes
Application	f5	nginx	0.2.6	Yes
Application	f5	nginx	0.3.0	Yes
Application	f5	nginx	0.3.1	Yes
Application	f5	nginx	0.3.2	Yes
Application	f5	nginx	0.3.3	Yes
Application	f5	nginx	0.3.4	Yes
Application	f5	nginx	0.3.5	Yes
Application	f5	nginx	0.3.6	Yes
Application	f5	nginx	0.3.7	Yes
Application	f5	nginx	0.3.8	Yes
Application	f5	nginx	0.3.9	Yes
Application	f5	nginx	0.3.10	Yes
Application	f5	nginx	0.3.11	Yes
Application	f5	nginx	0.3.12	Yes
Application	f5	nginx	0.3.13	Yes
Application	f5	nginx	0.3.14	Yes
Application	f5	nginx	0.3.15	Yes
Application	f5	nginx	0.3.16	Yes
Application	f5	nginx	0.3.17	Yes
Application	f5	nginx	0.3.18	Yes
Application	f5	nginx	0.3.19	Yes
Application	f5	nginx	0.3.20	Yes
Application	f5	nginx	0.3.21	Yes
Application	f5	nginx	0.3.22	Yes
Application	f5	nginx	0.3.23	Yes
Application	f5	nginx	0.3.24	Yes
Application	f5	nginx	0.3.25	Yes
Application	f5	nginx	0.3.26	Yes
Application	f5	nginx	0.3.27	Yes
Application	f5	nginx	0.3.28	Yes
Application	f5	nginx	0.3.29	Yes
Application	f5	nginx	0.3.30	Yes
Application	f5	nginx	0.3.31	Yes
Application	f5	nginx	0.3.32	Yes
Application	f5	nginx	0.3.33	Yes
Application	f5	nginx	0.3.34	Yes
Application	f5	nginx	0.3.35	Yes
Application	f5	nginx	0.3.36	Yes
Application	f5	nginx	0.3.37	Yes
Application	f5	nginx	0.3.38	Yes
Application	f5	nginx	0.3.39	Yes
Application	f5	nginx	0.3.40	Yes
Application	f5	nginx	0.3.41	Yes
Application	f5	nginx	0.3.42	Yes
Application	f5	nginx	0.3.43	Yes
Application	f5	nginx	0.3.44	Yes
Application	f5	nginx	0.3.45	Yes
Application	f5	nginx	0.3.46	Yes
Application	f5	nginx	0.3.47	Yes
Application	f5	nginx	0.3.48	Yes
Application	f5	nginx	0.3.49	Yes
Application	f5	nginx	0.3.50	Yes
Application	f5	nginx	0.3.51	Yes
Application	f5	nginx	0.3.52	Yes
Application	f5	nginx	0.3.53	Yes
Application	f5	nginx	0.3.54	Yes
Application	f5	nginx	0.3.55	Yes
Application	f5	nginx	0.3.56	Yes
Application	f5	nginx	0.3.57	Yes
Application	f5	nginx	0.3.58	Yes
Application	f5	nginx	0.3.59	Yes
Application	f5	nginx	0.3.60	Yes
Application	f5	nginx	0.3.61	Yes
Application	f5	nginx	0.4.0	Yes
Application	f5	nginx	0.4.1	Yes
Application	f5	nginx	0.4.2	Yes
Application	f5	nginx	0.4.3	Yes
Application	f5	nginx	0.4.4	Yes
Application	f5	nginx	0.4.5	Yes
Application	f5	nginx	0.4.6	Yes
Application	f5	nginx	0.4.7	Yes
Application	f5	nginx	0.4.8	Yes
Application	f5	nginx	0.4.9	Yes
Application	f5	nginx	0.4.10	Yes
Application	f5	nginx	0.4.11	Yes
Application	f5	nginx	0.4.12	Yes
Application	f5	nginx	0.4.13	Yes
Application	f5	nginx	0.5.0	Yes
Application	f5	nginx	0.5.1	Yes
Application	f5	nginx	0.5.2	Yes
Application	f5	nginx	0.5.3	Yes
Application	f5	nginx	0.5.4	Yes
Application	f5	nginx	0.5.5	Yes
Application	f5	nginx	0.5.6	Yes
Application	f5	nginx	0.5.7	Yes
Application	f5	nginx	0.5.8	Yes
Application	f5	nginx	0.5.9	Yes
Application	f5	nginx	0.5.10	Yes
Application	f5	nginx	0.5.11	Yes
Application	f5	nginx	0.5.12	Yes
Application	f5	nginx	0.5.13	Yes
Application	f5	nginx	0.5.14	Yes
Application	f5	nginx	0.5.15	Yes
Application	f5	nginx	0.5.16	Yes
Application	f5	nginx	0.5.17	Yes
Application	f5	nginx	0.5.18	Yes
Application	f5	nginx	0.5.19	Yes
Application	f5	nginx	0.5.20	Yes
Application	f5	nginx	0.5.21	Yes
Application	f5	nginx	0.5.22	Yes
Application	f5	nginx	0.5.23	Yes
Application	f5	nginx	0.5.24	Yes
Application	f5	nginx	0.5.25	Yes
Application	f5	nginx	0.5.26	Yes
Application	f5	nginx	0.5.27	Yes
Application	f5	nginx	0.5.28	Yes
Application	f5	nginx	0.5.29	Yes
Application	f5	nginx	0.5.30	Yes
Application	f5	nginx	0.5.31	Yes
Application	f5	nginx	0.5.32	Yes
Application	f5	nginx	0.5.33	Yes
Application	f5	nginx	0.5.34	Yes
Application	f5	nginx	0.5.35	Yes
Application	f5	nginx	0.5.36	Yes
Application	f5	nginx	0.5.37	Yes
Application	f5	nginx	0.6.0	Yes
Application	f5	nginx	0.6.1	Yes
Application	f5	nginx	0.6.2	Yes
Application	f5	nginx	0.6.3	Yes
Application	f5	nginx	0.6.4	Yes
Application	f5	nginx	0.6.5	Yes
Application	f5	nginx	0.6.6	Yes
Application	f5	nginx	0.6.7	Yes
Application	f5	nginx	0.6.8	Yes
Application	f5	nginx	0.6.9	Yes
Application	f5	nginx	0.6.10	Yes
Application	f5	nginx	0.6.11	Yes
Application	f5	nginx	0.6.12	Yes
Application	f5	nginx	0.6.13	Yes
Application	f5	nginx	0.6.14	Yes
Application	f5	nginx	0.6.15	Yes
Application	f5	nginx	0.6.17	Yes
Application	f5	nginx	0.6.18	Yes
Application	f5	nginx	0.6.19	Yes
Application	f5	nginx	0.6.20	Yes
Application	f5	nginx	0.6.21	Yes
Application	f5	nginx	0.6.22	Yes
Application	f5	nginx	0.6.23	Yes
Application	f5	nginx	0.6.24	Yes
Application	f5	nginx	0.6.25	Yes
Application	f5	nginx	0.6.26	Yes
Application	f5	nginx	0.6.27	Yes
Application	f5	nginx	0.6.28	Yes
Application	f5	nginx	0.6.29	Yes
Application	f5	nginx	0.6.30	Yes
Application	f5	nginx	0.6.31	Yes
Application	f5	nginx	0.6.32	Yes
Application	f5	nginx	0.6.33	Yes
Application	f5	nginx	0.6.34	Yes
Application	f5	nginx	0.6.35	Yes
Application	f5	nginx	0.6.36	Yes
Application	f5	nginx	0.6.37	Yes
Application	f5	nginx	0.6.38	Yes
Application	f5	nginx	0.7.0	Yes
Application	f5	nginx	0.7.1	Yes
Application	f5	nginx	0.7.2	Yes
Application	f5	nginx	0.7.3	Yes
Application	f5	nginx	0.7.4	Yes
Application	f5	nginx	0.7.5	Yes
Application	f5	nginx	0.7.6	Yes
Application	f5	nginx	0.7.7	Yes
Application	f5	nginx	0.7.8	Yes
Application	f5	nginx	0.7.9	Yes
Application	f5	nginx	0.7.10	Yes
Application	f5	nginx	0.7.11	Yes
Application	f5	nginx	0.7.12	Yes
Application	f5	nginx	0.7.13	Yes
Application	f5	nginx	0.7.14	Yes
Application	f5	nginx	0.7.15	Yes
Application	f5	nginx	0.7.16	Yes
Application	f5	nginx	0.7.17	Yes
Application	f5	nginx	0.7.18	Yes
Application	f5	nginx	0.7.19	Yes
Application	f5	nginx	0.7.20	Yes
Application	f5	nginx	0.7.21	Yes
Application	f5	nginx	0.7.22	Yes
Application	f5	nginx	0.7.23	Yes
Application	f5	nginx	0.7.24	Yes
Application	f5	nginx	0.7.25	Yes
Application	f5	nginx	0.7.26	Yes
Application	f5	nginx	0.7.27	Yes
Application	f5	nginx	0.7.28	Yes
Application	f5	nginx	0.7.29	Yes
Application	f5	nginx	0.7.30	Yes
Application	f5	nginx	0.7.31	Yes
Application	f5	nginx	0.7.32	Yes
Application	f5	nginx	0.7.33	Yes
Application	f5	nginx	0.7.34	Yes
Application	f5	nginx	0.7.35	Yes
Application	f5	nginx	0.7.36	Yes
Application	f5	nginx	0.7.37	Yes
Application	f5	nginx	0.7.38	Yes
Application	f5	nginx	0.7.39	Yes
Application	f5	nginx	0.7.40	Yes
Application	f5	nginx	0.7.41	Yes
Application	f5	nginx	0.7.42	Yes
Application	f5	nginx	0.7.43	Yes
Application	f5	nginx	0.7.44	Yes
Application	f5	nginx	0.7.45	Yes
Application	f5	nginx	0.7.46	Yes
Application	f5	nginx	0.7.47	Yes
Application	f5	nginx	0.7.48	Yes
Application	f5	nginx	0.7.49	Yes
Application	f5	nginx	0.7.50	Yes
Application	f5	nginx	0.7.51	Yes
Application	f5	nginx	0.7.52	Yes
Application	f5	nginx	0.7.53	Yes
Application	f5	nginx	0.7.54	Yes
Application	f5	nginx	0.7.55	Yes
Application	f5	nginx	0.7.56	Yes
Application	f5	nginx	0.7.57	Yes
Application	f5	nginx	0.7.58	Yes
Application	f5	nginx	0.7.59	Yes
Application	f5	nginx	0.7.60	Yes
Application	f5	nginx	0.7.61	Yes
Application	f5	nginx	0.8.0	Yes
Application	f5	nginx	0.8.1	Yes
Application	f5	nginx	0.8.2	Yes
Application	f5	nginx	0.8.3	Yes
Application	f5	nginx	0.8.4	Yes
Application	f5	nginx	0.8.5	Yes
Application	f5	nginx	0.8.6	Yes
Application	f5	nginx	0.8.7	Yes
Application	f5	nginx	0.8.8	Yes
Application	f5	nginx	0.8.9	Yes
Application	f5	nginx	0.8.10	Yes
Application	f5	nginx	0.8.11	Yes
Application	f5	nginx	0.8.12	Yes
Application	f5	nginx	0.8.13	Yes
Application	f5	nginx	0.8.14	Yes
Application	nginx	nginx	0.6.1516	Yes

References

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=552035 Exploit ([email protected])
http://marc.info/?l=nginx&m=125692080328141&w=2 ([email protected])
http://secunia.com/advisories/48577 ([email protected])
http://security.debian.org/pool/updates/main/n/nginx/nginx_0.4.13-2+etch3.diff.gz ([email protected])
http://security.gentoo.org/glsa/glsa-201203-22.xml ([email protected])
http://sysoev.ru/nginx/patch.null.pointer.txt Patch ([email protected])
http://www.debian.org/security/2009/dsa-1920 ([email protected])
http://www.openwall.com/lists/oss-security/2009/11/20/1 Patch ([email protected])
http://www.openwall.com/lists/oss-security/2009/11/20/6 Patch ([email protected])
http://www.openwall.com/lists/oss-security/2009/11/23/10 Patch ([email protected])
http://www.securityfocus.com/bid/36839 Exploit, Patch ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=539565 Patch ([email protected])
https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00428.html ([email protected])
https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00442.html ([email protected])
https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00449.html ([email protected])
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=552035 Exploit (af854a3a-2127-422b-91ae-364da2661108)
http://marc.info/?l=nginx&m=125692080328141&w=2 (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/48577 (af854a3a-2127-422b-91ae-364da2661108)
http://security.debian.org/pool/updates/main/n/nginx/nginx_0.4.13-2+etch3.diff.gz (af854a3a-2127-422b-91ae-364da2661108)
http://security.gentoo.org/glsa/glsa-201203-22.xml (af854a3a-2127-422b-91ae-364da2661108)
http://sysoev.ru/nginx/patch.null.pointer.txt Patch (af854a3a-2127-422b-91ae-364da2661108)
http://www.debian.org/security/2009/dsa-1920 (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2009/11/20/1 Patch (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2009/11/20/6 Patch (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2009/11/23/10 Patch (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/36839 Exploit, Patch (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.redhat.com/show_bug.cgi?id=539565 Patch (af854a3a-2127-422b-91ae-364da2661108)
https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00428.html (af854a3a-2127-422b-91ae-364da2661108)
https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00442.html (af854a3a-2127-422b-91ae-364da2661108)
https://www.redhat.com/archives/fedora-package-announce/2009-December/msg00449.html (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For f5's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.