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…

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.

Scores

EPSS (exploitation in 30 days)

33.6% · top 1.6% of all CVEs (4 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 10.0.

Weakness

• n/a

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)
• 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

[![CVE-2004-0492](https://trackcve.app/badge/CVE-2004-0492.svg)](https://trackcve.app/cve/CVE-2004-0492)

Record last updated 8 Aug 2024, 00:17 UTC.