# CVE-2010-4227: Memory corruption in n/a

> Remote attackers can execute arbitrary code or cause denial of service via a stack-based buffer overflow in the NFS RPC handler.

- **Severity:** Critical 10.0 (`AV:N/AC:L/Au:N/C:C/I:C/A:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 25 Feb 2011
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-r996-hr3f-f6c5

## What is CVE-2010-4227?

CVE-2010-4227 is a critical memory corruption vulnerability in Novell Netware, published on 25 Feb 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The xdrDecodeString function in XNFS.NLM in Novell Netware 6.5 before SP8 allows remote attackers to cause a denial of service (abend) or execute arbitrary code via a crafted, signed value in a NFS RPC request to port UDP 1234, leading to a stack-based buffer overflow.

Weakness: CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2010-4227?

It affects 1 product.


Products: Novell Netware.

## How do I fix CVE-2010-4227?

No fix has been published for CVE-2010-4227 yet. Limit exposure of the affected software until one is available.

## Is CVE-2010-4227 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2010-4227 exists.

Public exploit code:

- Novell Netware - RPC XNFS xdrDecodeString (exploitdb)

## Other vulnerabilities in Novell Netware

- [CVE-2010-2351](https://insights.sbomify.com/CVE-2010-2351/): Memory corruption in n/a (critical 10.0)
- [CVE-2003-1595](https://insights.sbomify.com/CVE-2003-1595/): Security feature bypass in n/a (critical 10.0)
- [CVE-2004-2734](https://insights.sbomify.com/CVE-2004-2734/): webadmin-apache.conf in Novell Web Manager of Novell NetWare 6.5 uses an uppercase Alias tag with an inconsistent lowercase directory tag fo (critical 10.0)
- [CVE-1999-1086](https://insights.sbomify.com/CVE-1999-1086/): Auth bypass in n/a (critical 10.0)
- [CVE-2008-5696](https://insights.sbomify.com/CVE-2008-5696/): Auth bypass in n/a (critical 9.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2010-4227 and fix it if it is affected.

What it is: CVE-2010-4227 is a critical memory corruption vulnerability in Novell Netware, published on 25 Feb 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-2010-4227 exists.

Affected product: Novell Netware. 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-2010-4227/ (Markdown: https://insights.sbomify.com/CVE-2010-4227/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2010-4227
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2010-4227
- OSV: https://osv.dev/vulnerability/CVE-2010-4227

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From sbomify Insights: https://insights.sbomify.com/CVE-2010-4227/
Summaries are generated and may contain mistakes; the official description above is the record.