# CVE-2017-12786: Memory corruption in n/a

> Remote attackers can achieve root code execution on NoviSwitch devices via a stack-based buffer overflow triggered by specific ACL modifications.

- **Severity:** Critical 9.8 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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:** 22 Aug 2017
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-9jrj-m7j2-49v6

## What is CVE-2017-12786?

CVE-2017-12786 is a critical memory corruption vulnerability in n/a, published on 22 Aug 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Network interfaces of the cliengine and noviengine services, included in the NoviWare software distribution through NW400.2.6 and deployed on NoviSwitch devices, can be inadvertently exposed if an operator attempts to modify ACLs, because of a bug when ACL modifications are applied. This could be leveraged by remote, unauthenticated attackers to gain resultant privileged (root) code execution on the switch, because there is a stack-based buffer overflow during unserialization of packet data.

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

## Which versions are affected by CVE-2017-12786?

It affects 1 product.


Products: Noviflow Noviware.

## How do I fix CVE-2017-12786?

No fix has been published for CVE-2017-12786 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-12786 being exploited?

There is no known exploitation of CVE-2017-12786 in the wild and no public exploit code.

Public exploit code:

- NoviFlow NoviWare < NW400.2.6 - Multiple Vulnerabilities (exploitdb)

## Other vulnerabilities in n/a

- [CVE-2017-12785](https://insights.sbomify.com/CVE-2017-12785/): Command injection in n/a (critical 9.8)
- [CVE-2017-12787](https://insights.sbomify.com/CVE-2017-12787/): Command injection in n/a (critical 9.8)
- [CVE-2020-13122](https://insights.sbomify.com/CVE-2020-13122/): Command injection in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-12786 and fix it if it is affected.

What it is: CVE-2017-12786 is a critical memory corruption vulnerability in n/a, published on 22 Aug 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-2017-12786 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-2017-12786/ (Markdown: https://insights.sbomify.com/CVE-2017-12786/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-12786
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-12786
- OSV: https://osv.dev/vulnerability/CVE-2017-12786

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-12786/
Summaries are generated and may contain mistakes; the official description above is the record.