# CVE-2019-17320: Memory corruption in XFTP

> A buffer overflow in NetSarang XFTP Client allows remote attackers to execute arbitrary code via a crafted filename from a malicious FTP server.

- **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:** 10 Oct 2019
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-j63h-gfj3-rm54

## What is CVE-2019-17320?

CVE-2019-17320 is a critical memory corruption vulnerability in NetSarang XFTP, published on 10 Oct 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

NetSarang XFTP Client 6.0149 and earlier version contains a buffer overflow vulnerability caused by improper boundary checks when copying file name from an attacker controlled FTP server. That leads attacker to execute arbitrary code by sending a crafted filename.

Weakness: CWE-120 (Buffer Copy without Checking Size of Input), CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2019-17320?

It affects 1 product.


Products: Netsarang Xftp.

## How do I fix CVE-2019-17320?

No fix has been published for CVE-2019-17320 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-17320 being exploited?

There is no known exploitation of CVE-2019-17320 in the wild and no public exploit code.

## Other vulnerabilities in NetSarang XFTP

- [CVE-2022-27963](https://insights.sbomify.com/CVE-2022-27963/): Code injection in n/a (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-17320 and fix it if it is affected.

What it is: CVE-2019-17320 is a critical memory corruption vulnerability in NetSarang XFTP, published on 10 Oct 2019. 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-2019-17320 in the wild and no public exploit code.

Affected product: NetSarang XFTP. 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-2019-17320/ (Markdown: https://insights.sbomify.com/CVE-2019-17320/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-17320
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-17320
- OSV: https://osv.dev/vulnerability/CVE-2019-17320

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-17320/
Summaries are generated and may contain mistakes; the official description above is the record.