UpHeron
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Servers and applications

CVE-2004-0492

Heap-based buffer overflow in proxy_util.c for mod_proxy in Apache 1.3.25 to 1.3.31 allows remote attackers to cause a denial of service (process crash) and possibly execute arbitrary code via a negative Content-Length HTTP header field, which causes a large amount of data to be copied.

Severity
High 10.0
Published
6 Aug 2004
Last changed
16 Jun 2026
Added to UpHeron
17 Oct 2026
Exploit chance
34% in the next 30 daysHigher than 98% of CVEs. EPSS by FIRST, 12 Nov 2026
Attack
Over the network · No login needed
Attacker can
Read data · Change data · Take it down
CVSS vector
AV:N/AC:L/Au:N/C:C/I:C/A:C
Sources
NVD

Affected software

SoftwareAffected versions
Apache HTTP ServerServers and applications · cpe:a:apache:http_server
  • Version 1.3.26
  • Version 1.3.27
  • Version 1.3.28
  • Version 1.3.29
  • Version 1.3.31

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2004-0492
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2004-0492