# CVE-2020-2524: Denial of service in Knowledge

> An unauthenticated attacker can cause a complete denial of service in Oracle Knowledge via HTTP requests.

- **Severity:** Medium 5.9 (`CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/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:** 15 Apr 2020
- **Updated:** 30 Sep 2024
- **Also known as:** GHSA-433p-hr74-8hv2

## What is CVE-2020-2524?

CVE-2020-2524 is a medium-severity denial of service vulnerability in Oracle Corporation Knowledge, published on 15 Apr 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Vulnerability in the Oracle Knowledge product of Oracle Knowledge (component: InQuira Search). Supported versions that are affected are 8.6.0-8.6.3. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Knowledge. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Knowledge. CVSS 3.0 Base Score 5.9 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H).

## Which versions are affected by CVE-2020-2524?

It affects 1 product.


Products: Oracle Knowledge.

## How do I fix CVE-2020-2524?

No fix has been published for CVE-2020-2524 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-2524 being exploited?

There is no known exploitation of CVE-2020-2524 in the wild and no public exploit code.

## Other vulnerabilities in Oracle Corporation Knowledge

- [CVE-2020-2791](https://insights.sbomify.com/CVE-2020-2791/): Auth bypass in Knowledge (critical 9.8)
- [CVE-2020-2931](https://insights.sbomify.com/CVE-2020-2931/): Auth bypass in Knowledge (critical 9.8)
- [CVE-2016-3476](https://insights.sbomify.com/CVE-2016-3476/): Information disclosure in n/a (medium 6.5)
- [CVE-2020-2795](https://insights.sbomify.com/CVE-2020-2795/): Privilege escalation in Knowledge (medium 6.3)
- [CVE-2020-2932](https://insights.sbomify.com/CVE-2020-2932/): Denial of service in Knowledge (medium 5.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-2524 and fix it if it is affected.

What it is: CVE-2020-2524 is a medium-severity denial of service vulnerability in Oracle Corporation Knowledge, published on 15 Apr 2020. 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-2020-2524 in the wild and no public exploit code.

Affected product: Oracle Corporation Knowledge. 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-2020-2524/ (Markdown: https://insights.sbomify.com/CVE-2020-2524/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-2524
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-2524
- OSV: https://osv.dev/vulnerability/CVE-2020-2524

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From sbomify Insights: https://insights.sbomify.com/CVE-2020-2524/
Summaries are generated and may contain mistakes; the official description above is the record.