# CVE-2010-1256: Memory corruption in n/a

> Authenticated attackers can execute arbitrary code on Microsoft IIS servers with Extended Protection enabled via memory corruption in token checking.

- **Severity:** High 8.5 (`AV:N/AC:M/Au:S/C:C/I:C/A:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 8 Jun 2010
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-h6vp-xg23-hpm2

## What is CVE-2010-1256?

CVE-2010-1256 is a high-severity memory corruption vulnerability in Microsoft Internet Information Server, published on 8 Jun 2010. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Unspecified vulnerability in Microsoft IIS 6.0, 7.0, and 7.5, when Extended Protection for Authentication is enabled, allows remote authenticated users to execute arbitrary code via unknown vectors related to "token checking" that trigger memory corruption, aka "IIS Authentication Memory Corruption Vulnerability."

Weakness: CWE-94 (Improper Control of Generation of Code)

## Which versions are affected by CVE-2010-1256?

It affects 1 product.


Products: Microsoft Internet Information Server.

## How do I fix CVE-2010-1256?

No fix has been published for CVE-2010-1256 yet. Limit exposure of the affected software until one is available.

## Is CVE-2010-1256 being exploited?

There is no known exploitation of CVE-2010-1256 in the wild and no public exploit code.

## Other vulnerabilities in Microsoft Internet Information Server

- [CVE-2008-0075](https://insights.sbomify.com/CVE-2008-0075/): Code injection in n/a (critical 10.0)
- [CVE-1999-1376](https://insights.sbomify.com/CVE-1999-1376/): Buffer overflow in fpcount.exe in IIS 4.0 with FrontPage Server Extensions allows remote attackers to execute arbitrary commands. (critical 10.0)
- [CVE-1999-0407](https://insights.sbomify.com/CVE-1999-0407/): By default, IIS 4.0 has a virtual directory /IISADMPWD which contains files that can be used as proxies for brute force password attacks, or (critical 10.0)
- [CVE-1999-0874](https://insights.sbomify.com/CVE-1999-0874/): Memory corruption in n/a (critical 10.0)
- [CVE-2009-3023](https://insights.sbomify.com/CVE-2009-3023/): Memory corruption in n/a (critical 9.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2010-1256 and fix it if it is affected.

What it is: CVE-2010-1256 is a high-severity memory corruption vulnerability in Microsoft Internet Information Server, published on 8 Jun 2010. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2010-1256 in the wild and no public exploit code.

Affected product: Microsoft Internet Information Server. 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-2010-1256/ (Markdown: https://insights.sbomify.com/CVE-2010-1256/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2010-1256
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2010-1256
- OSV: https://osv.dev/vulnerability/CVE-2010-1256

---
From sbomify Insights: https://insights.sbomify.com/CVE-2010-1256/
Summaries are generated and may contain mistakes; the official description above is the record.