CVE-2004-0492

Severity: critical (CVSS 10.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 33.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2004-08-06 · updated 2026-06-16

Description

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.

Affected products

Apache HTTP Server: 1.3.26, 1.3.27, 1.3.28, 1.3.29, 1.3.31
HP Virtualvault: 11.0.4
HP Vvos: 11.04
HP Webproxy: 2.0, 2.1
IBM HTTP Server: 1.3.26, 1.3.26.1, 1.3.26.2, 1.3.28
OpenBSD: 3.4, 3.5
Sgi Propack: 2.4

References

http://marc.info/?l=bugtraq&m=108711172710140&w=2
http://marc.info/?l=bugtraq&m=130497311408250&w=2
http://rhn.redhat.com/errata/RHSA-2004-245.html
http://seclists.org/lists/fulldisclosure/2004/Jun/0296.html
http://secunia.com/advisories/11841
http://sunsolve.sun.com/search/document.do?assetkey=1-26-101555-1
http://sunsolve.sun.com/search/document.do?assetkey=1-26-101841-1
http://sunsolve.sun.com/search/document.do?assetkey=1-26-57628-1
http://www.debian.org/security/2004/dsa-525
http://www.guninski.com/modproxy1.html
http://www.kb.cert.org/vuls/id/541310

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