# CVE-2016-8584: Auth bypass in n/a

> Remote attackers can bypass authentication on Trend Micro Threat Discovery Appliances by guessing predictable session values.

- **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:** 28 Apr 2017
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-5x2h-h4hh-q668

## What is CVE-2016-8584?

CVE-2016-8584 is a critical authentication bypass vulnerability in n/a, published on 28 Apr 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Trend Micro Threat Discovery Appliance 2.6.1062r1 and earlier uses predictable session values, which allows remote attackers to bypass authentication by guessing the value.

Weakness: CWE-284 (Improper Access Control)

## Which versions are affected by CVE-2016-8584?

It affects 1 product.


Products: Trendmicro Threat Discovery Appliance.

## How do I fix CVE-2016-8584?

No fix has been published for CVE-2016-8584 yet. Limit exposure of the affected software until one is available.

## Is CVE-2016-8584 being exploited?

There is no known exploitation of CVE-2016-8584 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2016-7547](https://insights.sbomify.com/CVE-2016-7547/): Command injection in n/a (critical 9.8)
- [CVE-2016-7552](https://insights.sbomify.com/CVE-2016-7552/): Path traversal in n/a (critical 9.8)
- [CVE-2016-8585](https://insights.sbomify.com/CVE-2016-8585/): Command injection in n/a (high 8.8)
- [CVE-2016-8586](https://insights.sbomify.com/CVE-2016-8586/): Command injection in n/a (high 8.8)
- [CVE-2016-8589](https://insights.sbomify.com/CVE-2016-8589/): Command injection in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2016-8584 and fix it if it is affected.

What it is: CVE-2016-8584 is a critical authentication bypass vulnerability in n/a, published on 28 Apr 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-2016-8584 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-2016-8584/ (Markdown: https://insights.sbomify.com/CVE-2016-8584/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2016-8584
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-8584
- OSV: https://osv.dev/vulnerability/CVE-2016-8584

---
From sbomify Insights: https://insights.sbomify.com/CVE-2016-8584/
Summaries are generated and may contain mistakes; the official description above is the record.