# CVE-2020-2955: Missing authorization in FLEXCUBE Core Banking

> Low-privileged attackers can modify, read, or disrupt data in Oracle FLEXCUBE Core Banking via HTTP due to missing authorization checks.

- **Severity:** Medium 6.3 (`CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L`)
- **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:** 15 Apr 2020
- **Updated:** 27 Sep 2024
- **Also known as:** GHSA-vjg4-2j2m-2g7m

## What is CVE-2020-2955?

CVE-2020-2955 is a medium-severity missing authorization vulnerability in Oracle Corporation FLEXCUBE Core Banking, published on 15 Apr 2020. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Vulnerability in the Oracle FLEXCUBE Core Banking product of Oracle Financial Services Applications (component: Transaction Processing). The supported version that is affected is 4.0. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle FLEXCUBE Core Banking. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle FLEXCUBE Core Banking accessible data as well as unauthorized read access to a subset of Oracle FLEXCUBE Core Banking accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Oracle FLEXCUBE Core Banking. CVSS 3.0 Base Score 6.3 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L).

## Which versions are affected by CVE-2020-2955?

It affects 1 product.


Products: Oracle Flexcube Core Banking.

## How do I fix CVE-2020-2955?

No fix has been published for CVE-2020-2955 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-2955 being exploited?

There is no known exploitation of CVE-2020-2955 in the wild and no public exploit code.

## Other vulnerabilities in Oracle Corporation FLEXCUBE Core Banking

- [CVE-2018-2807](https://insights.sbomify.com/CVE-2018-2807/): Cross-site scripting in FLEXCUBE Core Banking (medium 6.1)
- [CVE-2016-8323](https://insights.sbomify.com/CVE-2016-8323/): Missing authorization in FLEXCUBE Core Banking (medium 5.4)
- [CVE-2016-8324](https://insights.sbomify.com/CVE-2016-8324/): Missing authorization in FLEXCUBE Core Banking (medium 5.3)
- [CVE-2016-8322](https://insights.sbomify.com/CVE-2016-8322/): Information disclosure in FLEXCUBE Core Banking (medium 4.3)
- [CVE-2016-8314](https://insights.sbomify.com/CVE-2016-8314/): Information disclosure in FLEXCUBE Core Banking (low 3.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-2955 and fix it if it is affected.

What it is: CVE-2020-2955 is a medium-severity missing authorization vulnerability in Oracle Corporation FLEXCUBE Core Banking, published on 15 Apr 2020. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-2955 in the wild and no public exploit code.

Affected product: Oracle Corporation FLEXCUBE Core Banking. 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-2020-2955/ (Markdown: https://insights.sbomify.com/CVE-2020-2955/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-2955
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-2955
- OSV: https://osv.dev/vulnerability/CVE-2020-2955

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From sbomify Insights: https://insights.sbomify.com/CVE-2020-2955/
Summaries are generated and may contain mistakes; the official description above is the record.