# CVE-2011-0755: Integer overflow in n/a

> An integer overflow in PHP's mt_rand function allows attackers to predict random values, potentially bypassing security mechanisms relying on randomness.

- **Severity:** Medium 5.0 (`AV:N/AC:L/Au:N/C:N/I:P/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 2 Feb 2011
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-7m24-mw96-fh3w

## What is CVE-2011-0755?

CVE-2011-0755 is a medium-severity vulnerability in Php Php, published on 2 Feb 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Integer overflow in the mt_rand function in PHP before 5.3.4 might make it easier for context-dependent attackers to predict the return values by leveraging a script's use of a large max parameter, as demonstrated by a value that exceeds mt_getrandmax.

Weakness: CWE-189

## Which versions are affected by CVE-2011-0755?

It affects 1 product.


Products: Php Php.

## How do I fix CVE-2011-0755?

No fix has been published for CVE-2011-0755 yet. Limit exposure of the affected software until one is available.

## Is CVE-2011-0755 being exploited?

There is no known exploitation of CVE-2011-0755 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-2011-0755 and fix it if it is affected.

What it is: CVE-2011-0755 is a medium-severity vulnerability in Php Php, published on 2 Feb 2011. 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-2011-0755 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-2011-0755/ (Markdown: https://insights.sbomify.com/CVE-2011-0755/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2011-0755
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2011-0755
- OSV: https://osv.dev/vulnerability/CVE-2011-0755

---
From sbomify Insights: https://insights.sbomify.com/CVE-2011-0755/
Summaries are generated and may contain mistakes; the official description above is the record.