# CVE-2006-5706: Security feature bypass in n/a

> Local attackers can bypass open_basedir restrictions in PHP using chdir and tempnam functions, potentially accessing restricted files.

- **Severity:** High 7.2 (`AV:L/AC:L/Au:N/C:C/I:C/A:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 4 Nov 2006
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-g8jg-4ghm-qvfv

## What is CVE-2006-5706?

CVE-2006-5706 is a high-severity vulnerability in Php Php, published on 4 Nov 2006. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Unspecified vulnerabilities in PHP, probably before 5.2.0, allow local users to bypass open_basedir restrictions and perform unspecified actions via unspecified vectors involving the (1) chdir and (2) tempnam functions.  NOTE: the tempnam vector might overlap CVE-2006-1494.

## Which versions are affected by CVE-2006-5706?

It affects 1 product.


Products: Php Php.

## How do I fix CVE-2006-5706?

No fix has been published for CVE-2006-5706 yet. Limit exposure of the affected software until one is available.

## Is CVE-2006-5706 being exploited?

There is no known exploitation of CVE-2006-5706 in the wild and no public exploit code.

## 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-2006-5706 and fix it if it is affected.

What it is: CVE-2006-5706 is a high-severity vulnerability in Php Php, published on 4 Nov 2006. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2006-5706 in the wild and no public exploit code.

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-2006-5706/ (Markdown: https://insights.sbomify.com/CVE-2006-5706/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2006-5706
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2006-5706
- OSV: https://osv.dev/vulnerability/CVE-2006-5706

---
From sbomify Insights: https://insights.sbomify.com/CVE-2006-5706/
Summaries are generated and may contain mistakes; the official description above is the record.