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Fencer Vulns
medium 6.4

CVE-2004-0493 json

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…

published 2004-06-30 22 y ago modified 2026-06-16 4 mo ago also EUVD-2004-0492

cvss
6.4
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
84.8%
EPSS 84.8% chance of exploitation in 30 days, percentile 99.7%
public exploits
2
Exploit-DB

Summary

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.

Patch / fix

  • apache2 Debian 14, Debian 13, Debian 12 2.0.50-1

debian advisories DEBIAN-CVE-2004-0493

  • httpd RHEL 3 2.0.46-32.ent.3
  • mod_ssl RHEL 3 1:2.0.46-32.ent.3

red hat advisories RHSA-2004:342

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2004-0493 updated

security flaw

  • Red Hat Desktop version 3 httpd 2.0.46-32.ent.3, mod_ssl 2.0.46-32.ent.3 Red Hat Enterprise Linux AS version 3 httpd 2.0.46-32.ent.3, mod_ssl 2.0.46-32.ent.3 Red Hat Enterprise Linux ES version 3 httpd 2.0.46-32.ent.3, mod_ssl 2.0.46-32.ent.3 Red Hat Enterprise Linux WS version 3 httpd 2.0.46-32.ent.3, mod_ssl 2.0.46-32.ent.3
    fixed: vendor fix RHSA-2004:342

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Timeline

  1. Published
  2. First public exploit (EDB-360)

Exploit prediction

84.78% chance of exploitation in the next 30 days, higher than 99.7% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-371 Apache - Arbitrary Long HTTP Headers Denial of Service dos, 2004-08-02
  • EDB-360 Apache - Arbitrary Long HTTP Headers (Denial of Service) dos, 2004-07-22
  • securityfocus.com http://www.securityfocus.com/bid/10619 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 6.4 AV:N/AC:L/Au:N/C:N/I:P/A:P

Classification

Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.