# CVE-2016-6560: Integer overflow in osnet-incorporation

> A signed comparison error in illumos OS network functions allows attackers to trigger a system crash, causing denial of service.

- **Severity:** High 8.6 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/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:** 31 Mar 2017
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-m6wp-2r29-6958

## What is CVE-2016-6560?

CVE-2016-6560 is a high-severity vulnerability in illumos osnet-incorporation, published on 31 Mar 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

illumos osnet-incorporation bcopy() and bzero() implementations make signed instead of unsigned comparisons allowing a system crash.

Weakness: CWE-20 (Improper Input Validation), CWE-195 (Signed to Unsigned Conversion Error)

## Which versions are affected by CVE-2016-6560?

It affects 1 product.


Products: Illumos Illumos.

## How do I fix CVE-2016-6560?

No fix has been published for CVE-2016-6560 yet. Limit exposure of the affected software until one is available.

## Is CVE-2016-6560 being exploited?

There is no known exploitation of CVE-2016-6560 in the wild and no public exploit code.

## Other vulnerabilities in illumos osnet-incorporation

- [CVE-2020-27678](https://insights.sbomify.com/CVE-2020-27678/): Memory corruption in n/a (critical 9.8)
- [CVE-2019-9579](https://insights.sbomify.com/CVE-2019-9579/): Missing authorization in n/a (high 8.1)
- [CVE-2016-6561](https://insights.sbomify.com/CVE-2016-6561/): Null dereference in osnet-incorporation (high 7.5)
- [CVE-2021-43395](https://insights.sbomify.com/CVE-2021-43395/): Denial of service in n/a (medium 5.5)
- [CVE-2014-9491](https://insights.sbomify.com/CVE-2014-9491/): Null dereference in n/a (medium 5.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2016-6560 and fix it if it is affected.

What it is: CVE-2016-6560 is a high-severity vulnerability in illumos osnet-incorporation, published on 31 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-2016-6560 in the wild and no public exploit code.

Affected product: illumos osnet-incorporation. 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-2016-6560/ (Markdown: https://insights.sbomify.com/CVE-2016-6560/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2016-6560
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-6560
- OSV: https://osv.dev/vulnerability/CVE-2016-6560

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From sbomify Insights: https://insights.sbomify.com/CVE-2016-6560/
Summaries are generated and may contain mistakes; the official description above is the record.