# CVE-2017-0016: Null dereference in SMBv2/SMBv3

> Remote attackers can execute arbitrary code or cause denial of service via crafted SMBv2/v3 packets to the Windows Server service.

- **Severity:** Medium 5.9 (`CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 17 Mar 2017
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-vqj7-84pw-wc4r

## What is CVE-2017-0016?

CVE-2017-0016 is a medium-severity vulnerability in Microsoft Windows 10, published on 17 Mar 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Microsoft Windows 10 Gold, 1511, and 1607; Windows 8.1; Windows RT 8.1; Windows Server 2012 R2, and Windows Server 2016 do not properly handle certain requests in SMBv2 and SMBv3 packets, which allows remote attackers to execute arbitrary code via a crafted SMBv2 or SMBv3 packet to the Server service, aka "SMBv2/SMBv3 Null Dereference Denial of Service Vulnerability."

Weakness: CWE-476 (NULL Pointer Dereference)

## Which versions are affected by CVE-2017-0016?

It affects 5 products.


Products: Microsoft Windows 10, Microsoft Windows 8.1, Microsoft Windows Rt 8.1, Microsoft Windows Server 2012, Microsoft Windows Server 2016.

## How do I fix CVE-2017-0016?

No fix has been published for CVE-2017-0016 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-0016 being exploited?

There is no known exploitation of CVE-2017-0016 in the wild and no public exploit code.

## Other vulnerabilities in Microsoft Windows 10

- [CVE-2015-2426](https://insights.sbomify.com/CVE-2015-2426/): Microsoft Windows Adobe Type Manager Library Remote Code Execution (high 8.8, exploited in the wild)
- [CVE-2015-1769](https://insights.sbomify.com/CVE-2015-1769/): Microsoft Windows Mount Manager Privilege Escalation (medium 6.6, exploited in the wild)
- [CVE-2020-1467](https://insights.sbomify.com/CVE-2020-1467/): Windows Hard Link Elevation of Privilege Vulnerability (critical 10.0)
- [CVE-2021-26424](https://insights.sbomify.com/CVE-2021-26424/): Windows TCP/IP Remote Code Execution Vulnerability (critical 9.9)
- [CVE-2021-28476](https://insights.sbomify.com/CVE-2021-28476/): Windows Hyper-V Remote Code Execution Vulnerability (critical 9.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-0016 and fix it if it is affected.

What it is: CVE-2017-0016 is a medium-severity vulnerability in Microsoft Windows 10, published on 17 Mar 2017. 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-2017-0016 in the wild and no public exploit code.

Affected product: Microsoft Windows 10. 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-2017-0016/ (Markdown: https://insights.sbomify.com/CVE-2017-0016/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-0016
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-0016
- OSV: https://osv.dev/vulnerability/CVE-2017-0016

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From sbomify Insights: https://insights.sbomify.com/CVE-2017-0016/
Summaries are generated and may contain mistakes; the official description above is the record.