# CVE-2024-55556: Deserialization in n/a

> An attacker with the APP_KEY can achieve remote code execution in Crater Invoice by manipulating encrypted session cookies to trigger unsafe deserialization.

- **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:** 7 Jan 2025
- **Updated:** 8 Jan 2025
- **Also known as:** GHSA-gxfw-pm97-x2qf

## What is CVE-2024-55556?

CVE-2024-55556 is a critical unsafe deserialization vulnerability in n/a, published on 7 Jan 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability in Crater Invoice allows an unauthenticated attacker with knowledge of the APP_KEY to achieve remote command execution on the server by manipulating the laravel_session cookie, exploiting arbitrary deserialization through the encrypted session data. The exploitation vector of this vulnerability relies on an attacker obtaining Laravel's secret APP_KEY, which would allow them to decrypt and manipulate session cookies (laravel_session) containing serialized data. By altering this data and re-encrypting it with the APP_KEY, the attacker could trigger arbitrary deserialization on the server, potentially leading to remote command execution (RCE). The vulnerability is primarily exploited by accessing an exposed cookie and manipulating it using the secret key to gain malicious access to the server.

Weakness: CWE-502 (Deserialization of Untrusted Data)

## Which versions are affected by CVE-2024-55556?


## How do I fix CVE-2024-55556?

No fix has been published for CVE-2024-55556 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-55556 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-55556 exists.

Public exploit code:

- InvoiceShelf unauthenticated PHP Deserialization Vulnerability (metasploit)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-55556 and fix it if it is affected.

What it is: CVE-2024-55556 is a critical unsafe deserialization vulnerability in n/a, published on 7 Jan 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-55556 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-2024-55556/ (Markdown: https://insights.sbomify.com/CVE-2024-55556/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-55556
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-55556
- OSV: https://osv.dev/vulnerability/CVE-2024-55556

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-55556/
Summaries are generated and may contain mistakes; the official description above is the record.