# CVE-2021-35064: Privilege escalation in n/a

> Attackers can escalate privileges on KramerAV VIAWare systems due to insecure sudo configurations allowing execution of dangerous commands.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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:** 12 Jul 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-qw8w-2g6w-j99h

## What is CVE-2021-35064?

CVE-2021-35064 is a critical vulnerability in n/a, published on 12 Jul 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

KramerAV VIAWare, all tested versions, allow privilege escalation through misconfiguration of sudo. Sudoers permits running of multiple dangerous commands, including unzip, systemctl and dpkg.

Weakness: CWE-269 (Improper Privilege Management)

## Which versions are affected by CVE-2021-35064?

It affects 1 product.


Products: Kramerav Viaware.

## How do I fix CVE-2021-35064?

No fix has been published for CVE-2021-35064 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-35064 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-35064 exists.

Public exploit code:

- Python script to exploit CVE-2021-35064 and CVE-2021-36356 (github_poc): https://github.com/Chocapikk/CVE-2021-35064
- Kramer VIAware - Remote Code Execution (RCE) (Root) (exploitdb)
- Kramer VIAware - Privilege Escalation and Remote Code Execution (nuclei): http/cves/2021/CVE-2021-35064.yaml

## Other vulnerabilities in n/a

- [CVE-2021-36356](https://insights.sbomify.com/CVE-2021-36356/): File upload in n/a (critical 9.8)
- [CVE-2019-17124](https://insights.sbomify.com/CVE-2019-17124/): Missing authorization in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-35064 and fix it if it is affected.

What it is: CVE-2021-35064 is a critical vulnerability in n/a, published on 12 Jul 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-35064 exists.

Affected product: n/a. 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-2021-35064/ (Markdown: https://insights.sbomify.com/CVE-2021-35064/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-35064
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-35064
- OSV: https://osv.dev/vulnerability/CVE-2021-35064

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-35064/
Summaries are generated and may contain mistakes; the official description above is the record.