# CVE-2020-8339: Cross-site scripting in BladeCenter AMM firmware

> An authenticated user's credentials can be disclosed via a malicious site if they visit it while logged into the AMM web interface.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 15 Sep 2020
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-qw29-755q-4qgp

## What is CVE-2020-8339?

CVE-2020-8339 is a medium-severity cross-site scripting vulnerability in IBM BladeCenter AMM firmware, published on 15 Sep 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

A cross-site scripting inclusion (XSSI) vulnerability was reported in the legacy IBM BladeCenter Advanced Management Module (AMM) web interface prior to version 3.68n [BPET68N]. This vulnerability could allow an authenticated user's AMM credentials to be disclosed if the user is convinced to visit a malicious web site, possibly through phishing. Successful exploitation requires specific knowledge about the user’s network to be included in the malicious web site. Impact is limited to the normal access restrictions of the user visiting the malicious web site, and subject to the user being logged into AMM, being able to connect to both AMM and the malicious web site while the web browser is open, and using a web browser that does not inherently protect against this class of attack. The JavaScript code is not executed on AMM itself.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation), CWE-522 (Insufficiently Protected Credentials)

## Which versions are affected by CVE-2020-8339?

It affects 1 product.


Products: Ibm Bladecenter Advanced Management Module Firmware.

## How do I fix CVE-2020-8339?

No fix has been published for CVE-2020-8339 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-8339 being exploited?

There is no known exploitation of CVE-2020-8339 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-8339 and fix it if it is affected.

What it is: CVE-2020-8339 is a medium-severity cross-site scripting vulnerability in IBM BladeCenter AMM firmware, published on 15 Sep 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2020-8339 in the wild and no public exploit code.

Affected product: IBM BladeCenter AMM firmware. 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-2020-8339/ (Markdown: https://insights.sbomify.com/CVE-2020-8339/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-8339
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-8339
- OSV: https://osv.dev/vulnerability/CVE-2020-8339

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From sbomify Insights: https://insights.sbomify.com/CVE-2020-8339/
Summaries are generated and may contain mistakes; the official description above is the record.