# CVE-2023-20237: Server-side request forgery in Cisco Intersight Virtual Appliance

> An unauthenticated adjacent attacker can access internal HTTP services and subnets via crafted CLI commands due to insufficient proxy restrictions.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 16 Aug 2023
- **Updated:** 2 Aug 2024
- **Also known as:** GHSA-92f9-q83c-gm35

## What is CVE-2023-20237?

CVE-2023-20237 is a medium-severity server-side request forgery vulnerability in Cisco Intersight Virtual Appliance, published on 16 Aug 2023. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A vulnerability in Cisco Intersight Virtual Appliance could allow an unauthenticated, adjacent attacker to access internal HTTP services that are otherwise inaccessible.

 This vulnerability is due to insufficient restrictions on internally accessible http proxies. An attacker could exploit this vulnerability by submitting a crafted CLI command. A successful exploit could allow the attacker access to internal subnets beyond the sphere of their intended access level.

Weakness: CWE-77 (Improper Neutralization of Special Elements used in a Command), CWE-284 (Improper Access Control)

## Which versions are affected by CVE-2023-20237?

It affects 1 product.


Products: Cisco Intersight Virtual Appliance.

## How do I fix CVE-2023-20237?

No fix has been published for CVE-2023-20237 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-20237 being exploited?

There is no known exploitation of CVE-2023-20237 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Intersight Virtual Appliance

- [CVE-2021-34748](https://insights.sbomify.com/CVE-2021-34748/): Cisco Intersight Virtual Appliance Command Injection Vulnerability (high 8.8)
- [CVE-2021-1600](https://insights.sbomify.com/CVE-2021-1600/): Cisco Intersight Virtual Appliance IPv4 and IPv6 Forwarding Vulnerabilities (high 8.3)
- [CVE-2021-1601](https://insights.sbomify.com/CVE-2021-1601/): Cisco Intersight Virtual Appliance IPv4 and IPv6 Forwarding Vulnerabilities (high 8.3)
- [CVE-2021-1617](https://insights.sbomify.com/CVE-2021-1617/): Cisco Intersight Virtual Appliance Vulnerabilities (medium 6.5)
- [CVE-2021-1618](https://insights.sbomify.com/CVE-2021-1618/): Cisco Intersight Virtual Appliance Vulnerabilities (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-20237 and fix it if it is affected.

What it is: CVE-2023-20237 is a medium-severity server-side request forgery vulnerability in Cisco Intersight Virtual Appliance, published on 16 Aug 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-20237 in the wild and no public exploit code.

Affected product: Cisco Intersight Virtual Appliance. 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-2023-20237/ (Markdown: https://insights.sbomify.com/CVE-2023-20237/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-20237
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-20237
- OSV: https://osv.dev/vulnerability/CVE-2023-20237

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-20237/
Summaries are generated and may contain mistakes; the official description above is the record.