# CVE-2019-19373: Deserialization in n/a

> Attackers can achieve remote code execution in Squiz Matrix CMS by exploiting unsafe PHP deserialization in the Remote Content page type.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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:** 11 Dec 2019
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-qmqm-hvm5-wx4p

## What is CVE-2019-19373?

CVE-2019-19373 is a high-severity unsafe deserialization vulnerability in n/a, published on 11 Dec 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An issue was discovered in Squiz Matrix CMS 5.5.0 prior to 5.5.0.3, 5.5.1 prior to 5.5.1.8, 5.5.2 prior to 5.5.2.4, and 5.5.3 prior to 5.5.3.3 where a user can trigger arbitrary unserialization of a PHP object from a packages/cms/page_templates/page_remote_content/page_remote_content.inc POST parameter during processing of a Remote Content page type. This unserialization can be used to trigger the inclusion of arbitrary files on the filesystem (local file inclusion), and results in remote code execution.

Weakness: CWE-502 (Deserialization of Untrusted Data)

## Which versions are affected by CVE-2019-19373?

It affects 1 product.


Products: Squiz Matrix.

## How do I fix CVE-2019-19373?

No fix has been published for CVE-2019-19373 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-19373 being exploited?

There is no known exploitation of CVE-2019-19373 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2019-19374](https://insights.sbomify.com/CVE-2019-19374/): Path traversal in n/a (critical 9.1)
- [CVE-2017-14198](https://insights.sbomify.com/CVE-2017-14198/): Code injection in n/a (high 8.8)
- [CVE-2017-14196](https://insights.sbomify.com/CVE-2017-14196/): Path traversal in n/a (high 7.5)
- [CVE-2017-14197](https://insights.sbomify.com/CVE-2017-14197/): Cross-site scripting in n/a (medium 6.1)
- [CVE-2022-32277](https://insights.sbomify.com/CVE-2022-32277/): Missing authorization in n/a (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-19373 and fix it if it is affected.

What it is: CVE-2019-19373 is a high-severity unsafe deserialization vulnerability in n/a, published on 11 Dec 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-2019-19373 in the wild and no public exploit code.

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-2019-19373/ (Markdown: https://insights.sbomify.com/CVE-2019-19373/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-19373
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-19373
- OSV: https://osv.dev/vulnerability/CVE-2019-19373

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-19373/
Summaries are generated and may contain mistakes; the official description above is the record.