# CVE-2018-0584: Auth bypass in IIJ SmartKey App for Android

> Remote attackers can bypass authentication in the IIJ SmartKey Android app, potentially gaining unauthorized access to protected features.

- **Severity:** High 7.5 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 26 Jun 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-v75v-mq83-r4rq

## What is CVE-2018-0584?

CVE-2018-0584 is a high-severity authentication bypass vulnerability in Internet Initiative Japan Inc. IIJ SmartKey App for Android, published on 26 Jun 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

IIJ SmartKey App for Android version 2.1.0 and earlier allows remote attackers to bypass authentication [effect_of_bypassing_authentication] via unspecified vectors.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2018-0584?

It affects 1 product.


Products: Iij Smartkey.

## How do I fix CVE-2018-0584?

No fix has been published for CVE-2018-0584 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-0584 being exploited?

There is no known exploitation of CVE-2018-0584 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-0584 and fix it if it is affected.

What it is: CVE-2018-0584 is a high-severity authentication bypass vulnerability in Internet Initiative Japan Inc. IIJ SmartKey App for Android, published on 26 Jun 2018. 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-2018-0584 in the wild and no public exploit code.

Affected product: Internet Initiative Japan Inc. IIJ SmartKey App for Android. 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-2018-0584/ (Markdown: https://insights.sbomify.com/CVE-2018-0584/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-0584
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-0584
- OSV: https://osv.dev/vulnerability/CVE-2018-0584

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From sbomify Insights: https://insights.sbomify.com/CVE-2018-0584/
Summaries are generated and may contain mistakes; the official description above is the record.