# CVE-2010-1635: Null dereference in n/a

> Remote attackers can crash the Samba smbd process via a NULL pointer dereference in the chain_reply function, causing denial of service.

- **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:** 17 Jun 2010
- **Updated:** 7 Aug 2024
- **Also known as:** DEBIAN-CVE-2010-1635, ECHO-1736-aa22-335c, GHSA-xvfw-jjhx-vm37

## What is CVE-2010-1635?

CVE-2010-1635 is a medium-severity vulnerability in Samba Samba, published on 17 Jun 2010. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The chain_reply function in process.c in smbd in Samba before 3.4.8 and 3.5.x before 3.5.2 allows remote attackers to cause a denial of service (NULL pointer dereference and process crash) via a Negotiate Protocol request with a certain 0x0003 field value followed by a Session Setup AndX request with a certain 0x8003 field value.

## Which versions are affected by CVE-2010-1635?

It affects 1 product.


Products: Samba Samba.

## How do I fix CVE-2010-1635?

Upgrade to a fixed version.

## Is CVE-2010-1635 being exploited?

There is no known exploitation of CVE-2010-1635 in the wild and no public exploit code.

## Other vulnerabilities in Samba Samba

- [CVE-2012-1182](https://insights.sbomify.com/CVE-2012-1182/): Integer overflow in n/a (critical 10.0)
- [CVE-2007-2446](https://insights.sbomify.com/CVE-2007-2446/): Memory corruption in n/a (critical 10.0)
- [CVE-2004-0600](https://insights.sbomify.com/CVE-2004-0600/): Memory corruption in n/a (critical 10.0)
- [CVE-1999-0810](https://insights.sbomify.com/CVE-1999-0810/): Denial of service in n/a (critical 10.0)
- [CVE-1999-0182](https://insights.sbomify.com/CVE-1999-0182/): Memory corruption in n/a (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2010-1635 and fix it if it is affected.

What it is: CVE-2010-1635 is a medium-severity vulnerability in Samba Samba, published on 17 Jun 2010. 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-2010-1635 in the wild and no public exploit code.

Affected product: Samba Samba. 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-2010-1635/ (Markdown: https://insights.sbomify.com/CVE-2010-1635/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2010-1635
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2010-1635
- OSV: https://osv.dev/vulnerability/CVE-2010-1635

---
From sbomify Insights: https://insights.sbomify.com/CVE-2010-1635/
Summaries are generated and may contain mistakes; the official description above is the record.