# CVE-2010-4645: Denial of service in n/a

> Attackers can cause a denial of service via infinite loop in PHP's strtod function using specific floating-point values.

- **Severity:** Medium 5.0 (`AV:N/AC:L/Au:N/C:N/I:N/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 11 Jan 2011
- **Updated:** 13 Feb 2025
- **Also known as:** GHSA-89c3-82jr-pppj

## What is CVE-2010-4645?

CVE-2010-4645 is a medium-severity denial of service vulnerability in Php Php, published on 11 Jan 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

strtod.c, as used in the zend_strtod function in PHP 5.2 before 5.2.17 and 5.3 before 5.3.5, and other products, allows context-dependent attackers to cause a denial of service (infinite loop) via a certain floating-point value in scientific notation, which is not properly handled in x87 FPU registers, as demonstrated using 2.2250738585072011e-308.

Weakness: CWE-189

## Which versions are affected by CVE-2010-4645?

It affects 1 product.


Products: Php Php.

## How do I fix CVE-2010-4645?

Upgrade to a fixed version.

## Is CVE-2010-4645 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2010-4645 exists.

Public exploit code:

- PHP 5.3.2 - 'zend_strtod()' Floating-Point Value Denial of Service (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-2010-4645 and fix it if it is affected.

What it is: CVE-2010-4645 is a medium-severity denial of service vulnerability in Php Php, published on 11 Jan 2011. 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-2010-4645 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-2010-4645/ (Markdown: https://insights.sbomify.com/CVE-2010-4645/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2010-4645
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2010-4645
- OSV: https://osv.dev/vulnerability/CVE-2010-4645

---
From sbomify Insights: https://insights.sbomify.com/CVE-2010-4645/
Summaries are generated and may contain mistakes; the official description above is the record.