# CVE-2007-1383: Integer overflow in n/a

> An integer overflow in PHP 4's reference counter allows attackers to execute arbitrary code via double-free conditions.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 10 Mar 2007
- **Updated:** 3 Apr 2025
- **Also known as:** GHSA-259c-37px-2x76

## What is CVE-2007-1383?

CVE-2007-1383 is a critical vulnerability in Php Php, published on 10 Mar 2007. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Integer overflow in the 16 bit variable reference counter in PHP 4 allows context-dependent attackers to execute arbitrary code by overflowing this counter, which causes the same variable to be destroyed twice, a related issue to CVE-2007-1286.

Weakness: CWE-189, CWE-190 (Integer Overflow or Wraparound)

## Which versions are affected by CVE-2007-1383?

It affects 1 product.


Products: Php Php.

## How do I fix CVE-2007-1383?

No fix has been published for CVE-2007-1383 yet. Limit exposure of the affected software until one is available.

## Is CVE-2007-1383 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2007-1383 exists.

Public exploit code:

- PHP 4 - Userland ZVAL Reference Counter Overflow (PoC) (exploitdb)

## Other vulnerabilities in Php Php

- [CVE-2012-2688](https://insights.sbomify.com/CVE-2012-2688/): Integer overflow in n/a (critical 10.0)
- [CVE-2012-2376](https://insights.sbomify.com/CVE-2012-2376/): Memory corruption in n/a (critical 10.0)
- [CVE-2011-3268](https://insights.sbomify.com/CVE-2011-3268/): Memory corruption in n/a (critical 10.0)
- [CVE-2009-4143](https://insights.sbomify.com/CVE-2009-4143/): Other in n/a (critical 10.0)
- [CVE-2008-5557](https://insights.sbomify.com/CVE-2008-5557/): Memory corruption in n/a (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2007-1383 and fix it if it is affected.

What it is: CVE-2007-1383 is a critical vulnerability in Php Php, published on 10 Mar 2007. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2007-1383 exists.

Affected product: Php Php. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2007-1383/ (Markdown: https://insights.sbomify.com/CVE-2007-1383/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2007-1383
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2007-1383
- OSV: https://osv.dev/vulnerability/CVE-2007-1383

---
From sbomify Insights: https://insights.sbomify.com/CVE-2007-1383/
Summaries are generated and may contain mistakes; the official description above is the record.