# CVE-2023-42000: Arcserve UDP Agent Unauthenticated Path Traversal File Upload

> Unauthenticated attackers can upload arbitrary files to any location on the server via path traversal, potentially leading to code execution.

- **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:** 27 Nov 2023
- **Updated:** 2 Aug 2024
- **Also known as:** GHSA-4xpq-wqf9-p6mv

## What is CVE-2023-42000?

CVE-2023-42000 is a critical path traversal vulnerability in Arcserve UDP, published on 27 Nov 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Arcserve UDP prior to 9.2 contains a path traversal vulnerability in com.ca.arcflash.ui.server.servlet.FileHandlingServlet.doUpload(). An unauthenticated remote attacker can exploit it to upload arbitrary files to any location on the file system where the UDP agent is installed.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2023-42000?

It affects 1 product.


Products: Arcserve Udp.

## How do I fix CVE-2023-42000?

No fix has been published for CVE-2023-42000 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-42000 being exploited?

There is no known exploitation of CVE-2023-42000 in the wild and no public exploit code.

## Other vulnerabilities in Arcserve UDP

- [CVE-2015-4068](https://insights.sbomify.com/CVE-2015-4068/): Arcserve Unified Data Protection (UDP) Directory Traversal (critical 9.1, exploited in the wild)
- [CVE-2024-0799](https://insights.sbomify.com/CVE-2024-0799/): Authentication Bypass via wizardLogin in Arcserve Unified Data Protection (critical 9.8)
- [CVE-2023-41998](https://insights.sbomify.com/CVE-2023-41998/): Arcserve UDP Unauthenticated RCE (critical 9.8)
- [CVE-2023-41999](https://insights.sbomify.com/CVE-2023-41999/): Arcserve UDP Management Authentication Bypass (critical 9.8)
- [CVE-2023-26258](https://insights.sbomify.com/CVE-2023-26258/): Auth bypass in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-42000 and fix it if it is affected.

What it is: CVE-2023-42000 is a critical path traversal vulnerability in Arcserve UDP, published on 27 Nov 2023. 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-2023-42000 in the wild and no public exploit code.

Affected product: Arcserve UDP. 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-2023-42000/ (Markdown: https://insights.sbomify.com/CVE-2023-42000/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-42000
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-42000
- OSV: https://osv.dev/vulnerability/CVE-2023-42000

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-42000/
Summaries are generated and may contain mistakes; the official description above is the record.