# CVE-2018-3030: Denial of service in FLEXCUBE Investor Servicing

> A low-privileged attacker can cause a complete denial of service in Oracle FLEXCUBE Investor Servicing via network access.

- **Severity:** Medium 6.5 (`CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 18 Jul 2018
- **Updated:** 2 Oct 2024
- **Also known as:** GHSA-7jx5-cfmw-8w5m

## What is CVE-2018-3030?

CVE-2018-3030 is a medium-severity denial of service vulnerability in Oracle Corporation FLEXCUBE Investor Servicing, published on 18 Jul 2018. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Vulnerability in the Oracle FLEXCUBE Investor Servicing component of Oracle Financial Services Applications (subcomponent: Infrastructure). Supported versions that are affected are 12.0.4, 12.1.0, 12.3.0 and 12.4.0. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle FLEXCUBE Investor Servicing. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle FLEXCUBE Investor Servicing. CVSS 3.0 Base Score 6.5 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).

## Which versions are affected by CVE-2018-3030?

It affects 1 product.


Products: Oracle Flexcube Investor Servicing.

## How do I fix CVE-2018-3030?

No fix has been published for CVE-2018-3030 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-3030 being exploited?

There is no known exploitation of CVE-2018-3030 in the wild and no public exploit code.

## Other vulnerabilities in Oracle Corporation FLEXCUBE Investor Servicing

- [CVE-2026-21973](https://insights.sbomify.com/CVE-2026-21973/): Missing authorization in Oracle FLEXCUBE Investor Servicing (high 8.1)
- [CVE-2020-14569](https://insights.sbomify.com/CVE-2020-14569/): Missing authorization in FLEXCUBE Investor Servicing (high 8.1)
- [CVE-2019-2841](https://insights.sbomify.com/CVE-2019-2841/): Missing authorization in FLEXCUBE Investor Servicing (high 8.1)
- [CVE-2018-3035](https://insights.sbomify.com/CVE-2018-3035/): Missing authorization in FLEXCUBE Investor Servicing (high 8.1)
- [CVE-2016-8315](https://insights.sbomify.com/CVE-2016-8315/): Missing authorization in FLEXCUBE Investor Servicing (high 8.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-3030 and fix it if it is affected.

What it is: CVE-2018-3030 is a medium-severity denial of service vulnerability in Oracle Corporation FLEXCUBE Investor Servicing, published on 18 Jul 2018. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2018-3030 in the wild and no public exploit code.

Affected product: Oracle Corporation FLEXCUBE Investor Servicing. 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-2018-3030/ (Markdown: https://insights.sbomify.com/CVE-2018-3030/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-3030
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-3030
- OSV: https://osv.dev/vulnerability/CVE-2018-3030

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-3030/
Summaries are generated and may contain mistakes; the official description above is the record.