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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…
- 10.0HighCVSS base score
- 33.6%Exploitation in 30 daysEPSS · top 1.6% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By mitre
- 27 days later
· 27 days later
Published
- 20 years later
· 20 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | High10.0 | AV:N/AC:L/Au:N/C:C/I:C/A:C |
- EPSS (exploitation in 30 days)
- 33.6% · top 1.6% of all CVEs (10 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 10.0.
Affected products
n/a
- affected n/a
References
23
- 20040611 [OpenPKG-SA-2004.029] OpenPKG Security Advisory (apache) (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
- FLSA:1737 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
- RHSA-2004:245 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- SSRT090208 (opens in a new tab)vendor-advisoryx_refsource_HPx_transferred
- http://www.guninski.com/modproxy1.html (opens in a new tab)x_refsource_MISCx_transferred
- 57628 (opens in a new tab)vendor-advisoryx_refsource_SUNALERTx_transferred
- 20040610 Buffer overflow in apache mod_proxy,yet still apache much better than windows (opens in a new tab)mailing-listx_refsource_FULLDISCx_transferred
- oval:org.mitre.oval:def:100112 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- MDKSA-2004:065 (opens in a new tab)vendor-advisoryx_refsource_MANDRAKEx_transferred
- oval:org.mitre.oval:def:4863 (opens in a new tab)vdb-entrysignaturex_refsource_OVALx_transferred
- 101555 (opens in a new tab)vendor-advisoryx_refsource_SUNALERTx_transferred
- DSA-525 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- VU#541310 (opens in a new tab)third-party-advisoryx_refsource_CERT-VNx_transferred
- 101841 (opens in a new tab)vendor-advisoryx_refsource_SUNALERTx_transferred
- 11841 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- apache-modproxy-contentlength-bo(16387) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- [httpd-cvs] 20210330 svn commit: r1073139 [1/13] - in /websites/staging/httpd/trunk/content: ./ security/json/ (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [httpd-cvs] 20210330 svn commit: r1073139 [3/13] - in /websites/staging/httpd/trunk/content: ./ security/json/ (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [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 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [httpd-cvs] 20210330 svn commit: r1888194 [3/13] - /httpd/site/trunk/content/security/json/ (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [httpd-cvs] 20210330 svn commit: r1073149 [4/13] - in /websites/staging/httpd/trunk/content: ./ security/ security/json/ (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [httpd-cvs] 20210330 svn commit: r1073149 [1/13] - in /websites/staging/httpd/trunk/content: ./ security/ security/json/ (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- [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 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2004-0491 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2004-0492)Record last updated .