# CVE-2021-34748: Cisco Intersight Virtual Appliance Command Injection Vulnerability

> Authenticated attackers can execute arbitrary root-level commands on Cisco Intersight Virtual Appliance via the web interface.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **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:** 6 Oct 2021
- **Updated:** 7 Nov 2024
- **Also known as:** GHSA-ffw3-9pwp-wmfg

## What is CVE-2021-34748?

CVE-2021-34748 is a high-severity command injection vulnerability in Cisco Intersight Virtual Appliance, published on 6 Oct 2021. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability in the web-based management interface of Cisco Intersight Virtual Appliance could allow an authenticated, remote attacker to perform a command injection attack on an affected device. This vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by using the web-based management interface to execute a command using crafted input. A successful exploit could allow the attacker to execute arbitrary commands using root-level privileges on an affected device.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command), CWE-77 (Improper Neutralization of Special Elements used in a Command)

## Which versions are affected by CVE-2021-34748?

It affects 1 product.


Products: Cisco Intersight Virtual Appliance.

## How do I fix CVE-2021-34748?

No fix has been published for CVE-2021-34748 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-34748 being exploited?

There is no known exploitation of CVE-2021-34748 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Intersight Virtual Appliance

- [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)
- [CVE-2023-20237](https://insights.sbomify.com/CVE-2023-20237/): Server-side request forgery in Cisco Intersight Virtual Appliance (medium 4.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-34748 and fix it if it is affected.

What it is: CVE-2021-34748 is a high-severity command injection vulnerability in Cisco Intersight Virtual Appliance, published on 6 Oct 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-34748 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-2021-34748/ (Markdown: https://insights.sbomify.com/CVE-2021-34748/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-34748
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-34748
- OSV: https://osv.dev/vulnerability/CVE-2021-34748

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-34748/
Summaries are generated and may contain mistakes; the official description above is the record.