CVE-2004-0493

Apache httpd 2.0.49 - DoS/Buffer Overflow

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 2 public exploits for CVE-2004-0493. PoCs published by anonymous, bkbll.

AI-analyzed exploit summary This exploit targets CVE-2004-0493, a buffer overflow vulnerability in an unspecified web server. It sends a maliciously crafted HTTP request with an overly long header to trigger a denial-of-service (DoS) condition.

Description

The ap_get_mime_headers_core function in Apache httpd 2.0.49 allows remote attackers to cause a denial of service (memory exhaustion), and possibly an integer signedness error leading to a heap-based buffer overflow on 64 bit systems, via long header lines with large numbers of space or tab characters.

Exploits (2)

exploitdb WORKING POC VERIFIED
by anonymous · cdoslinux
https://www.exploit-db.com/exploits/371

This exploit targets CVE-2004-0493, a buffer overflow vulnerability in an unspecified web server. It sends a maliciously crafted HTTP request with an overly long header to trigger a denial-of-service (DoS) condition.

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: Unspecified web server (likely an older or obscure HTTP server)
No auth needed
Prerequisites: Network access to the target web server
devstral-2 · analyzed Feb 16, 2026 Full analysis →
exploitdb WORKING POC VERIFIED
by bkbll · perldosmultiple
https://www.exploit-db.com/exploits/360

This exploit targets a memory exhaustion vulnerability in Apache HTTP Server versions prior to 2.0.49 by sending a large number of malformed HTTP headers to trigger a denial-of-service (DoS) condition. The exploit floods the target with oversized headers, leading to out-of-memory errors and process termination.

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: Apache HTTP Server < 2.0.49
No auth needed
Prerequisites: Network access to the target Apache server
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (24)

Core 24
Core References
Vendor Advisory vendor-advisory x_refsource_trustix
http://www.trustix.org/errata/2004/0039/
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/16524
Vendor Advisory vendor-advisory x_refsource_mandrake
http://www.mandriva.com/security/advisories?name=MDKSA-2004:064
Mailing List vendor-advisory x_refsource_hp
http://marc.info/?l=bugtraq&m=109181600614477&w=2
Third Party Advisory vendor-advisory x_refsource_gentoo
http://security.gentoo.org/glsa/glsa-200407-03.xml
Various Sources x_refsource_misc
http://www.guninski.com/httpd1.html
Various Sources x_refsource_confirm
http://www.apacheweek.com/features/security-20
Mailing List mailing-list x_refsource_bugtraq
http://marc.info/?l=bugtraq&m=108853066800184&w=2
Exploit, Patch, Vendor Advisory vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/10619
Vendor Advisory vendor-advisory x_refsource_redhat
http://www.redhat.com/support/errata/RHSA-2004-342.html
Mailing List mailing-list x_refsource_fulldisc
http://lists.grok.org.uk/pipermail/full-disclosure/2004-June/023133.html
Third Party Advisory, VDB Entry vdb-entry signature x_refsource_oval
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10605

Scores

EPSS 0.8478
EPSS Percentile 99.7%

Details

Status published
Products (16)
apache/http_server 2.0.47
apache/http_server 2.0.48
apache/http_server 2.0.49
avaya/converged_communications_server 2.0
avaya/s8300 r2.0.0
avaya/s8500 r2.0.0
avaya/s8700 r2.0.0
gentoo/linux 1.4
ibm/http_server 2.0.42
ibm/http_server 2.0.42.1
... and 6 more
Published Aug 06, 2004
Tracked Since Feb 18, 2026