Heap-based buffer overflow in proxy_util.c for mod_proxy in Apache 1.3.25 to 1.3.31…
Priority HIGH 68Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Complete · Complete · Complete
- Fix status
- Fixed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat.
Summary
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.
Why it matters now
EPSS 0.33639 98th percentileScored 2026-11-07
Fix Fixed Red Hat: 1 advisory
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 17
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:apache:http_server:1.3.26:*:*:*:*:*:*:* | 1.3.26 | Vulnerable | Apache |
| cpe:2.3:a:apache:http_server:1.3.27:*:*:*:*:*:*:* | 1.3.27 | Vulnerable | Apache |
| cpe:2.3:a:apache:http_server:1.3.28:*:*:*:*:*:*:* | 1.3.28 | Vulnerable | Apache |
| cpe:2.3:a:apache:http_server:1.3.29:*:*:*:*:*:*:* | 1.3.29 | Vulnerable | Apache |
| cpe:2.3:a:apache:http_server:1.3.31:*:*:*:*:*:*:* | 1.3.31 | Vulnerable | Apache |
| cpe:2.3:a:hp:virtualvault:11.0.4:*:*:*:*:*:*:* | 11.0.4 | Vulnerable | Hewlett Packard Enterprise |
| cpe:2.3:a:hp:webproxy:2.0:*:*:*:*:*:*:* | 2.0 | Vulnerable | Hewlett Packard Enterprise |
| cpe:2.3:a:hp:webproxy:2.1:*:*:*:*:*:*:* | 2.1 | Vulnerable | Hewlett Packard Enterprise |
| cpe:2.3:a:ibm:http_server:1.3.26:*:*:*:*:*:*:* | 1.3.26 | Vulnerable | IBM |
| cpe:2.3:a:ibm:http_server:1.3.26.1:*:*:*:*:*:*:* | 1.3.26.1 | Vulnerable | IBM |
- cpe:2.3:a:apache:http_server:1.3.26:*:*:*:*:*:*:* Versions 1.3.26 Vulnerable ·Apache
- cpe:2.3:a:apache:http_server:1.3.27:*:*:*:*:*:*:* Versions 1.3.27 Vulnerable ·Apache
- cpe:2.3:a:apache:http_server:1.3.28:*:*:*:*:*:*:* Versions 1.3.28 Vulnerable ·Apache
- cpe:2.3:a:apache:http_server:1.3.29:*:*:*:*:*:*:* Versions 1.3.29 Vulnerable ·Apache
- cpe:2.3:a:apache:http_server:1.3.31:*:*:*:*:*:*:* Versions 1.3.31 Vulnerable ·Apache
- cpe:2.3:a:hp:virtualvault:11.0.4:*:*:*:*:*:*:* Versions 11.0.4 Vulnerable ·Hewlett Packard Enterprise
- cpe:2.3:a:hp:webproxy:2.0:*:*:*:*:*:*:* Versions 2.0 Vulnerable ·Hewlett Packard Enterprise
- cpe:2.3:a:hp:webproxy:2.1:*:*:*:*:*:*:* Versions 2.1 Vulnerable ·Hewlett Packard Enterprise
- cpe:2.3:a:ibm:http_server:1.3.26:*:*:*:*:*:*:* Versions 1.3.26 Vulnerable ·IBM
- cpe:2.3:a:ibm:http_server:1.3.26.1:*:*:*:*:*:*:* Versions 1.3.26.1 Vulnerable ·IBM
Show 7 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:ibm:http_server:1.3.26.2:*:*:*:*:*:*:* | 1.3.26.2 | Vulnerable | IBM |
| cpe:2.3:a:ibm:http_server:1.3.28:*:*:*:*:*:*:* | 1.3.28 | Vulnerable | IBM |
| cpe:2.3:a:sgi:propack:2.4:*:*:*:*:*:*:* | 2.4 | Vulnerable | Sgi |
| cpe:2.3:o:hp:vvos:11.04:*:*:*:*:*:*:* | 11.04 | Vulnerable | Hewlett Packard Enterprise |
| cpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:* | all versions | Vulnerable | OpenBSD |
| cpe:2.3:o:openbsd:openbsd:3.4:*:*:*:*:*:*:* | 3.4 | Vulnerable | OpenBSD |
| cpe:2.3:o:openbsd:openbsd:3.5:*:*:*:*:*:*:* | 3.5 | Vulnerable | OpenBSD |
- cpe:2.3:a:ibm:http_server:1.3.26.2:*:*:*:*:*:*:* Versions 1.3.26.2 Vulnerable ·IBM
- cpe:2.3:a:ibm:http_server:1.3.28:*:*:*:*:*:*:* Versions 1.3.28 Vulnerable ·IBM
- cpe:2.3:a:sgi:propack:2.4:*:*:*:*:*:*:* Versions 2.4 Vulnerable ·Sgi
- cpe:2.3:o:hp:vvos:11.04:*:*:*:*:*:*:* Versions 11.04 Vulnerable ·Hewlett Packard Enterprise
- cpe:2.3:o:openbsd:openbsd:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·OpenBSD
- cpe:2.3:o:openbsd:openbsd:3.4:*:*:*:*:*:*:* Versions 3.4 Vulnerable ·OpenBSD
- cpe:2.3:o:openbsd:openbsd:3.5:*:*:*:*:*:*:* Versions 3.5 Vulnerable ·OpenBSD
Remediation
Red Hat 1 advisory
- RHSA-2004:245 Released 2004-06-14 · Red Hat rating Moderateapache, mod_ssl security update
- Red Hat Enterprise Linux AS (Advanced Server) version 2.1
- Red Hat Enterprise Linux ES version 2.1
- Red Hat Enterprise Linux WS version 2.1
- Red Hat Linux Advanced Workstation 2.1
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux AS (Advanced Server) version 2.1 | Fixed | RHSA-2004:245 |
| Red Hat Enterprise Linux ES version 2.1 | Fixed | RHSA-2004:245 |
| Red Hat Enterprise Linux WS version 2.1 | Fixed | RHSA-2004:245 |
| Red Hat Linux Advanced Workstation 2.1 | Fixed | RHSA-2004:245 |
Timeline
- 2026-10-02 Threatist record created from CVE-2004-0492
- 2026-10-03 Alias added: GHSA-w59m-3c5g-3v9c
References
Patch 2
Other 12
- 20040611 [OpenPKG-SA-2004.029] OpenPKG Security Advisory (apache)
- http://www.guninski.com/modproxy1.html
- 20040610 Buffer overflow in apache mod_proxy,yet still apache much better than windows
- oval:org.mitre.oval:def:100112
- oval:org.mitre.oval:def:4863
- [httpd-cvs] 20210330 svn commit: r1073139 [1/13] - in /websites/staging/httpd/trunk/content: ./ security/json/
- [httpd-cvs] 20210330 svn commit: r1073139 [3/13] - in /websites/staging/httpd/trunk/content: ./ security/json/
- [httpd-cvs] 20210330 svn commit: r1073140 [1/4] - in /websites/staging/httpd/trunk/content: ./ security/cvejsontohtml.py security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html
- [httpd-cvs] 20210330 svn commit: r1888194 [3/13] - /httpd/site/trunk/content/security/json/
- [httpd-cvs] 20210330 svn commit: r1073149 [4/13] - in /websites/staging/httpd/trunk/content: ./ security/ security/json/
- [httpd-cvs] 20210330 svn commit: r1073149 [1/13] - in /websites/staging/httpd/trunk/content: ./ security/ security/json/
- [httpd-cvs] 20210606 svn commit: r1075470 [1/4] - in /websites/staging/httpd/trunk/content: ./ security/json/CVE-2020-13938.json security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html
Sources
- CVE-2004-0492 · CVE Program
- CVE-2004-0492 · NVD
- FIRST EPSS
- GHSA-w59m-3c5g-3v9c · GitHub Advisory Database · CC BY 4.0
- CVE-2004-0492 · Red Hat security data · CC BY 4.0
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