# CVE-2017-7295: Use after free in n/a

> A use-after-free in Contiki OS httpd causes a NULL pointer dereference and board crash, allowing attackers to perform denial of service.

- **Severity:** High 7.5 (`CVSS:3.0/AV:N/AC:L/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:** 28 May 2017
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-gxqp-9c84-pvrg

## What is CVE-2017-7295?

CVE-2017-7295 is a high-severity use after free vulnerability in n/a, published on 28 May 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An issue was discovered in Contiki Operating System 3.0. A use-after-free vulnerability exists in httpd-simple.c in cc26xx-web-demo httpd, where upon a connection close event, the http_state structure was not deallocated properly, resulting in a NULL pointer dereference in the output processing function. This resulted in a board crash, which can be used to perform denial of service.

Weakness: CWE-416 (Use After Free)

## Which versions are affected by CVE-2017-7295?

It affects 1 product.


Products: Contiki-Os Contiki.

## How do I fix CVE-2017-7295?

No fix has been published for CVE-2017-7295 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-7295 being exploited?

There is no known exploitation of CVE-2017-7295 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2021-40523](https://insights.sbomify.com/CVE-2021-40523/): Denial of service in n/a (high 7.5)
- [CVE-2021-38386](https://insights.sbomify.com/CVE-2021-38386/): Memory corruption in n/a (high 7.5)
- [CVE-2021-38387](https://insights.sbomify.com/CVE-2021-38387/): Denial of service in n/a (high 7.5)
- [CVE-2021-38311](https://insights.sbomify.com/CVE-2021-38311/): Denial of service in n/a (high 7.5)
- [CVE-2021-28362](https://insights.sbomify.com/CVE-2021-28362/): Integer overflow in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-7295 and fix it if it is affected.

What it is: CVE-2017-7295 is a high-severity use after free vulnerability in n/a, published on 28 May 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-2017-7295 in the wild and no public exploit code.

Affected product: n/a. 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-2017-7295/ (Markdown: https://insights.sbomify.com/CVE-2017-7295/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-7295
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-7295
- OSV: https://osv.dev/vulnerability/CVE-2017-7295

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-7295/
Summaries are generated and may contain mistakes; the official description above is the record.