# CVE-2014-4721: Information disclosure in n/a

> Attackers can read sensitive process memory, such as private SSL keys, via type confusion in PHP's phpinfo function when specific server configurations are used.

- **Severity:** Low 2.6 (`AV:N/AC:H/Au:N/C:P/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 6 Jul 2014
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-crxc-8h2p-6c8g, UBUNTU-CVE-2014-4721

## What is CVE-2014-4721?

CVE-2014-4721 is a low-severity vulnerability in Debian Debian Linux, published on 6 Jul 2014. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The phpinfo implementation in ext/standard/info.c in PHP before 5.4.30 and 5.5.x before 5.5.14 does not ensure use of the string data type for the PHP_AUTH_PW, PHP_AUTH_TYPE, PHP_AUTH_USER, and PHP_SELF variables, which might allow context-dependent attackers to obtain sensitive information from process memory by using the integer data type with crafted values, related to a "type confusion" vulnerability, as demonstrated by reading a private SSL key in an Apache HTTP Server web-hosting environment with mod_ssl and a PHP 5.3.x mod_php.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2014-4721?

It affects 2 products.


Products: Debian Debian Linux, Php Php.

## How do I fix CVE-2014-4721?

Upgrade to a fixed version.

## Is CVE-2014-4721 being exploited?

There is no known exploitation of CVE-2014-4721 in the wild and no public exploit code.

## Other vulnerabilities in Debian Debian Linux

- [CVE-2015-3306](https://insights.sbomify.com/CVE-2015-3306/): ProFTPD Improper Access Control (critical 10.0, exploited in the wild)
- [CVE-2025-49113](https://insights.sbomify.com/CVE-2025-49113/): RoundCube Webmail Deserialization of Untrusted Data (critical 9.9, exploited in the wild)
- [CVE-2026-24061](https://insights.sbomify.com/CVE-2026-24061/): GNU InetUtils Argument Injection (critical 9.8, exploited in the wild)
- [CVE-2025-39682](https://insights.sbomify.com/CVE-2025-39682/): Linux Kernel Improper Check for Unusual or Exceptional Conditions (critical 9.8, exploited in the wild)
- [CVE-2024-9680](https://insights.sbomify.com/CVE-2024-9680/): Mozilla Firefox Use-After-Free (critical 9.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2014-4721 and fix it if it is affected.

What it is: CVE-2014-4721 is a low-severity vulnerability in Debian Debian Linux, published on 6 Jul 2014. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2014-4721 in the wild and no public exploit code.

Affected product: Debian Debian Linux. 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-2014-4721/ (Markdown: https://insights.sbomify.com/CVE-2014-4721/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2014-4721
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2014-4721
- OSV: https://osv.dev/vulnerability/CVE-2014-4721

---
From sbomify Insights: https://insights.sbomify.com/CVE-2014-4721/
Summaries are generated and may contain mistakes; the official description above is the record.