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Fencer Vulns
medium 5.0

CVE-2004-0751 json

The char_buffer_read function in the mod_ssl module for Apache 2.x, when using reverse proxying to an SSL server, allows remote attackers t…

published 2004-09-10 22 y ago modified 2026-06-16 4 mo ago also EUVD-2004-0749

cvss
5.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
72.3%
EPSS 72.3% chance of exploitation in 30 days, percentile 99.4%
public exploits
1
Exploit-DB

Summary

The char_buffer_read function in the mod_ssl module for Apache 2.x, when using reverse proxying to an SSL server, allows remote attackers to cause a denial of service (segmentation fault).

Patch / fix

  • apache http_server 2.0.51
  • apache2 Debian 14, Debian 13, Debian 12 2.0.50-11

debian advisories DEBIAN-CVE-2004-0751

  • httpd RHEL 3 2.0.46-40.ent
  • mod_ssl RHEL 3 1:2.0.46-40.ent

red hat advisories RHSA-2004:463

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-2004-0751 updated

security flaw

  • Red Hat Desktop version 3 httpd 2.0.46-40.ent, mod_ssl 2.0.46-40.ent Red Hat Enterprise Linux AS version 3 httpd 2.0.46-40.ent, mod_ssl 2.0.46-40.ent Red Hat Enterprise Linux ES version 3 httpd 2.0.46-40.ent, mod_ssl 2.0.46-40.ent Red Hat Enterprise Linux WS version 3 httpd 2.0.46-40.ent, mod_ssl 2.0.46-40.ent
    fixed: vendor fix RHSA-2004:463

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. First public exploit (EDB-24590)
  2. Published

Exploit prediction

72.31% chance of exploitation in the next 30 days, higher than 99.4% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-24590 Apache mod_ssl 2.0.x - Remote Denial of Service dos, 2004-09-10

CVSS scores

assigned by version score vector
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/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.