The addslashes function in PHP 4.3.9 does not properly escape a NULL (/0) character…
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 · None · None
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
The addslashes function in PHP 4.3.9 does not properly escape a NULL (/0) character, which may allow remote attackers to read arbitrary files in PHP applications that contain a directory traversal vulnerability in require or include statements, but are otherwise protected by the magic_quotes_gpc mechanism. NOTE: this issue was originally REJECTed by its CNA before publication, but that decision is in active dispute. This candidate may change significantly in the future as a result of further discussion.
Why it matters now
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 · 10
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:php:php:4.3.6:*:*:*:*:*:*:* | 4.3.6 | Vulnerable | PHP |
| cpe:2.3:a:php:php:4.3.7:*:*:*:*:*:*:* | 4.3.7 | Vulnerable | PHP |
| cpe:2.3:a:php:php:4.3.8:*:*:*:*:*:*:* | 4.3.8 | Vulnerable | PHP |
| cpe:2.3:a:php:php:4.3.9:*:*:*:*:*:*:* | 4.3.9 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.0:rc1:*:*:*:*:*:* | 5.0 rc1 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.0:rc2:*:*:*:*:*:* | 5.0 rc2 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.0:rc3:*:*:*:*:*:* | 5.0 rc3 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.0.0:*:*:*:*:*:*:* | 5.0.0 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.0.1:*:*:*:*:*:*:* | 5.0.1 | Vulnerable | PHP |
| cpe:2.3:a:php:php:5.0.2:*:*:*:*:*:*:* | 5.0.2 | Vulnerable | PHP |
- cpe:2.3:a:php:php:4.3.6:*:*:*:*:*:*:* Versions 4.3.6 Vulnerable ·PHP
- cpe:2.3:a:php:php:4.3.7:*:*:*:*:*:*:* Versions 4.3.7 Vulnerable ·PHP
- cpe:2.3:a:php:php:4.3.8:*:*:*:*:*:*:* Versions 4.3.8 Vulnerable ·PHP
- cpe:2.3:a:php:php:4.3.9:*:*:*:*:*:*:* Versions 4.3.9 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.0:rc1:*:*:*:*:*:* Versions 5.0 rc1 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.0:rc2:*:*:*:*:*:* Versions 5.0 rc2 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.0:rc3:*:*:*:*:*:* Versions 5.0 rc3 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.0.0:*:*:*:*:*:*:* Versions 5.0.0 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.0.1:*:*:*:*:*:*:* Versions 5.0.1 Vulnerable ·PHP
- cpe:2.3:a:php:php:5.0.2:*:*:*:*:*:*:* Versions 5.0.2 Vulnerable ·PHP
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2004-1020
- 2026-10-03 Alias added: GHSA-h7q9-pqp4-r828
References
More Php vulnerabilities
- TI-2024-04260 Argument Injection in PHP-CGI KEVCVSS 3.1CRITICAL 9.8
- TI-2019-08259 Underflow in PHP-FPM can lead to RCE KEVCVSS 3.1CRITICAL 9.8
- TI-2012-01607 sapi/cgi/cgi_main.c in PHP before 5.3.12 and 5.4.x before 5.4.2, when configured as a CGI… KEVCVSS 3.1CRITICAL 9.8
- TI-2026-78794 PHP remote code execution via stale global state KEVCVSS 4.0CRITICAL 9.2
- TI-2026-78793 Out-of-memory handling flaw in PHP allows remote code execution KEVCVSS 4.0CRITICAL 9.2
- TI-2015-00205 Heap-based buffer overflow in the __nss_hostname_digits_dots function in glibc 2.2, and… CVSS 2.0HIGH 10.0
Sources
- CVE-2004-1020 · CVE Program
- CVE-2004-1020 · NVD
- FIRST EPSS
- GHSA-h7q9-pqp4-r828 · GitHub Advisory Database · CC BY 4.0
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