# CVE-2022-31798: Cross-site scripting in n/a

> An attacker can chain XSS and session fixation to take over admin or user accounts on Nortek Linear eMerge E3-Series devices.

- **Severity:** Medium 6.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 25 Aug 2022
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-vfqv-5hjq-5j8p

## What is CVE-2022-31798?

CVE-2022-31798 is a medium-severity cross-site scripting vulnerability in n/a, published on 25 Aug 2022. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

Nortek Linear eMerge E3-Series 0.32-07p devices are vulnerable to /card_scan.php?CardFormatNo= XSS with session fixation (via PHPSESSID) when they are chained together. This would allow an attacker to take over an admin account or a user account.

Weakness: CWE-384 (Session Fixation)

## Which versions are affected by CVE-2022-31798?

It affects 1 product.


Products: Nortekcontrol Emerge E3 Firmware.

## How do I fix CVE-2022-31798?

No fix has been published for CVE-2022-31798 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-31798 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-31798 exists.

Public exploit code:

- CVE-2022-31798 Proof of Concept (github_poc): https://github.com/omarhashem123/CVE-2022-31798
- Nortek Linear eMerge E3-Series - Cross-Site Scripting (nuclei): http/cves/2022/CVE-2022-31798.yaml

## Other vulnerabilities in n/a

- [CVE-2022-31499](https://insights.sbomify.com/CVE-2022-31499/): Command injection in n/a (critical 9.8)
- [CVE-2018-5439](https://insights.sbomify.com/CVE-2018-5439/): Command injection in Nortek Linear eMerge E3 Series (critical 9.8)
- [CVE-2022-31269](https://insights.sbomify.com/CVE-2022-31269/): Hardcoded credentials in n/a (high 8.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-31798 and fix it if it is affected.

What it is: CVE-2022-31798 is a medium-severity cross-site scripting vulnerability in n/a, published on 25 Aug 2022. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-31798 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-2022-31798/ (Markdown: https://insights.sbomify.com/CVE-2022-31798/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-31798
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-31798
- OSV: https://osv.dev/vulnerability/CVE-2022-31798

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-31798/
Summaries are generated and may contain mistakes; the official description above is the record.