mod_access in Apache 1.3 before 1.3.30, when running big-endian 64-bit platforms, does…
Priority MEDIUM 46Published · 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
- Partial · Partial · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
mod_access in Apache 1.3 before 1.3.30, when running big-endian 64-bit platforms, does not properly parse Allow/Deny rules using IP addresses without a netmask, which could allow remote attackers to bypass intended access restrictions.
Why it matters now
EPSS 0.10838 95th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
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 · 22
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:apache:http_server:1.3:*:*:*:*:*:*:* | 1.3 | Vulnerable | Apache |
| cpe:2.3:a:apache:http_server:1.3.1:*:*:*:*:*:*:* | 1.3.1 | Vulnerable | Apache |
| cpe:2.3:a:apache:http_server:1.3.3:*:*:*:*:*:*:* | 1.3.3 | Vulnerable | Apache |
| cpe:2.3:a:apache:http_server:1.3.4:*:*:*:*:*:*:* | 1.3.4 | Vulnerable | Apache |
| cpe:2.3:a:apache:http_server:1.3.6:*:*:*:*:*:*:* | 1.3.6 | Vulnerable | Apache |
| cpe:2.3:a:apache:http_server:1.3.7:*:dev:*:*:*:*:* | 1.3.7 | Vulnerable | Apache |
| cpe:2.3:a:apache:http_server:1.3.9:*:*:*:*:*:*:* | 1.3.9 | Vulnerable | Apache |
| cpe:2.3:a:apache:http_server:1.3.11:*:*:*:*:*:*:* | 1.3.11 | Vulnerable | Apache |
| cpe:2.3:a:apache:http_server:1.3.12:*:*:*:*:*:*:* | 1.3.12 | Vulnerable | Apache |
| cpe:2.3:a:apache:http_server:1.3.14:*:*:*:*:*:*:* | 1.3.14 | Vulnerable | Apache |
- cpe:2.3:a:apache:http_server:1.3:*:*:*:*:*:*:* Versions 1.3 Vulnerable ·Apache
- cpe:2.3:a:apache:http_server:1.3.1:*:*:*:*:*:*:* Versions 1.3.1 Vulnerable ·Apache
- cpe:2.3:a:apache:http_server:1.3.3:*:*:*:*:*:*:* Versions 1.3.3 Vulnerable ·Apache
- cpe:2.3:a:apache:http_server:1.3.4:*:*:*:*:*:*:* Versions 1.3.4 Vulnerable ·Apache
- cpe:2.3:a:apache:http_server:1.3.6:*:*:*:*:*:*:* Versions 1.3.6 Vulnerable ·Apache
- cpe:2.3:a:apache:http_server:1.3.7:*:dev:*:*:*:*:* Versions 1.3.7 Vulnerable ·Apache
- cpe:2.3:a:apache:http_server:1.3.9:*:*:*:*:*:*:* Versions 1.3.9 Vulnerable ·Apache
- cpe:2.3:a:apache:http_server:1.3.11:*:*:*:*:*:*:* Versions 1.3.11 Vulnerable ·Apache
- cpe:2.3:a:apache:http_server:1.3.12:*:*:*:*:*:*:* Versions 1.3.12 Vulnerable ·Apache
- cpe:2.3:a:apache:http_server:1.3.14:*:*:*:*:*:*:* Versions 1.3.14 Vulnerable ·Apache
Show 12 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:apache:http_server:1.3.17:*:*:*:*:*:*:* | 1.3.17 | Vulnerable | Apache |
| cpe:2.3:a:apache:http_server:1.3.18:*:*:*:*:*:*:* | 1.3.18 | Vulnerable | Apache |
| cpe:2.3:a:apache:http_server:1.3.19:*:*:*:*:*:*:* | 1.3.19 | Vulnerable | Apache |
| cpe:2.3:a:apache:http_server:1.3.20:*:*:*:*:*:*:* | 1.3.20 | Vulnerable | Apache |
| cpe:2.3:a:apache:http_server:1.3.22:*:*:*:*:*:*:* | 1.3.22 | Vulnerable | Apache |
| cpe:2.3:a:apache:http_server:1.3.23:*:*:*:*:*:*:* | 1.3.23 | Vulnerable | Apache |
| cpe:2.3:a:apache:http_server:1.3.24:*:*:*:*:*:*:* | 1.3.24 | Vulnerable | Apache |
| cpe:2.3:a:apache:http_server:1.3.25:*:*:*:*:*:*:* | 1.3.25 | Vulnerable | Apache |
| 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:1.3.17:*:*:*:*:*:*:* Versions 1.3.17 Vulnerable ·Apache
- cpe:2.3:a:apache:http_server:1.3.18:*:*:*:*:*:*:* Versions 1.3.18 Vulnerable ·Apache
- cpe:2.3:a:apache:http_server:1.3.19:*:*:*:*:*:*:* Versions 1.3.19 Vulnerable ·Apache
- cpe:2.3:a:apache:http_server:1.3.20:*:*:*:*:*:*:* Versions 1.3.20 Vulnerable ·Apache
- cpe:2.3:a:apache:http_server:1.3.22:*:*:*:*:*:*:* Versions 1.3.22 Vulnerable ·Apache
- cpe:2.3:a:apache:http_server:1.3.23:*:*:*:*:*:*:* Versions 1.3.23 Vulnerable ·Apache
- cpe:2.3:a:apache:http_server:1.3.24:*:*:*:*:*:*:* Versions 1.3.24 Vulnerable ·Apache
- cpe:2.3:a:apache:http_server:1.3.25:*:*:*:*:*:*:* Versions 1.3.25 Vulnerable ·Apache
- 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
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2003-0993
- 2026-10-03 Alias added: GHSA-4m6j-mh25-2w47
References
Advisory 8
Other 13
- 20040512 [OpenPKG-SA-2004.021] OpenPKG Security Advisory (apache)
- oval:org.mitre.oval:def:100111
- [apache-cvs] 20040307 cvs commit: apache-1.3/src/modules/standard mod_access.c
- http://issues.apache.org/bugzilla/show_bug.cgi?id=23850
- oval:org.mitre.oval:def:4670
- [httpd-cvs] 20210330 svn commit: r1073139 [1/13] - in /websites/staging/httpd/trunk/content: ./ security/json/
- [httpd-cvs] 20210330 svn commit: r1073139 [2/13] - 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 [2/13] - /httpd/site/trunk/content/security/json/
- [httpd-cvs] 20210330 svn commit: r1073149 [3/13] - 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] 20210603 svn commit: r1075360 [1/3] - in /websites/staging/httpd/trunk/content: ./ security/json/CVE-2021-31618.json security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html
- [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
More Apache Http Server vulnerabilities
- TI-2021-18535 Path Traversal and Remote Code Execution in Apache HTTP Server 2.4.49 and 2.4.50 (incomplete fix of CVE-2021-41773) KEVCVSS 3.1CRITICAL 9.8
- TI-2021-18417 Path traversal and file disclosure vulnerability in Apache HTTP Server 2.4.49 KEVCVSS 3.1CRITICAL 9.8
- TI-2024-25716 Apache HTTP Server weakness in mod_rewrite when first segment of substitution matches filesystem path. KEVCVSS 3.1CRITICAL 9.1
- TI-2021-17490 mod_proxy SSRF KEVCVSS 3.1CRITICAL 9.0
- TI-2019-00184 Use after free in Apache HTTP Server KEVCVSS 3.1HIGH 7.8
- TI-2009-03392 The TLS protocol, and the SSL protocol 3.0 and possibly earlier, as used in Microsoft… CVSS 3.1CRITICAL 9.8
Sources
- CVE-2003-0993 · CVE Program
- CVE-2003-0993 · NVD
- FIRST EPSS
- GHSA-4m6j-mh25-2w47 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences