# CVE-2019-17321: Information disclosure in REXPERT

> Unauthenticated attackers can leak usernames via session file paths in HTTP responses from ClipSoft REXPERT.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 30 Oct 2019
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-mpcf-8q93-cjx2

## What is CVE-2019-17321?

CVE-2019-17321 is a medium-severity vulnerability in ClipSoft REXPERT, published on 30 Oct 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

ClipSoft REXPERT 1.0.0.527 and earlier version have an information disclosure issue. When requesting web page associated with session, could leak username via session file path of HTTP response data. No authentication is required.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2019-17321?

It affects 1 product.


Products: Clipsoft Rexpert.

## How do I fix CVE-2019-17321?

No fix has been published for CVE-2019-17321 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-17321 being exploited?

There is no known exploitation of CVE-2019-17321 in the wild and no public exploit code.

## Other vulnerabilities in ClipSoft REXPERT

- [CVE-2019-17323](https://insights.sbomify.com/CVE-2019-17323/): Code injection in REXPERT (high 8.8)
- [CVE-2019-17322](https://insights.sbomify.com/CVE-2019-17322/): Path traversal in REXPERT (medium 6.5)
- [CVE-2019-17324](https://insights.sbomify.com/CVE-2019-17324/): Path traversal in REXPERT (medium 6.5)
- [CVE-2019-17325](https://insights.sbomify.com/CVE-2019-17325/): File upload in REXPERT (medium 6.5)
- [CVE-2019-17326](https://insights.sbomify.com/CVE-2019-17326/): Path traversal in REXPERT (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-17321 and fix it if it is affected.

What it is: CVE-2019-17321 is a medium-severity vulnerability in ClipSoft REXPERT, published on 30 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-2019-17321 in the wild and no public exploit code.

Affected product: ClipSoft REXPERT. 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-2019-17321/ (Markdown: https://insights.sbomify.com/CVE-2019-17321/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-17321
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-17321
- OSV: https://osv.dev/vulnerability/CVE-2019-17321

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-17321/
Summaries are generated and may contain mistakes; the official description above is the record.