# CVE-2020-5622: Denial of service in Shadankun Server Security Type (excluding normal blocking method types)

> Remote attackers can cause a denial of service preventing new attack source IPs from being blocked for ten minutes via crafted requests.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/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:** 2 Sep 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-9h6c-p2fm-j5qx

## What is CVE-2020-5622?

CVE-2020-5622 is a high-severity denial of service vulnerability in Cyber Security Cloud , Inc. Shadankun Server Security Type (excluding normal blocking method types), published on 2 Sep 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Shadankun Server Security Type (excluding normal blocking method types) Ver.1.5.3 and earlier allows remote attackers to cause a denial of service which may result in not being able to add newly detected attack source IP addresses as blocking targets for about 10 minutes via a specially crafted request.

## Which versions are affected by CVE-2020-5622?

It affects 1 product.


Products: Shadan-Kun Server Security Type.

## How do I fix CVE-2020-5622?

No fix has been published for CVE-2020-5622 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-5622 being exploited?

There is no known exploitation of CVE-2020-5622 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-5622 and fix it if it is affected.

What it is: CVE-2020-5622 is a high-severity denial of service vulnerability in Cyber Security Cloud , Inc. Shadankun Server Security Type (excluding normal blocking method types), published on 2 Sep 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-2020-5622 in the wild and no public exploit code.

Affected product: Cyber Security Cloud , Inc. Shadankun Server Security Type (excluding normal blocking method types). 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-2020-5622/ (Markdown: https://insights.sbomify.com/CVE-2020-5622/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-5622
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-5622
- OSV: https://osv.dev/vulnerability/CVE-2020-5622

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From sbomify Insights: https://insights.sbomify.com/CVE-2020-5622/
Summaries are generated and may contain mistakes; the official description above is the record.