# CVE-2020-23355: Codiad Vulnerable to PHP Magic Hash Vulnerability

> Codiad allows authentication bypass via PHP magic hash collisions, enabling attackers to log in as any user.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/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:** 27 Jan 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-8fhh-hf9w-55p7

## What is CVE-2020-23355?

CVE-2020-23355 is a high-severity authentication bypass vulnerability in n/a, published on 27 Jan 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

** PRODUCT NOT SUPPORTED WHEN ASSIGNED ** Codiad 2.8.4 /componetns/user/class.user.php:Authenticate() is vulnerable in magic hash authentication bypass. If encrypted or hash value for the passwords form certain formats of magic hash, e.g, 0e123, another hash value 0e234 something can successfully authenticate.

## Which versions are affected by CVE-2020-23355?

2 open source packages ship an affected version, including codiad/codiad. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `codiad/codiad` | Packagist | All versions to 2.8.4 | None |
| `codiad/codiad` | Packagist | All versions to 2.8.4 | None |

Products: Codiad Codiad.

## How do I fix CVE-2020-23355?

No fix has been published for CVE-2020-23355 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-23355 being exploited?

There is no known exploitation of CVE-2020-23355 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2019-19208](https://insights.sbomify.com/CVE-2019-19208/): Code injection in codiad (critical 9.8)
- [CVE-2018-14009](https://insights.sbomify.com/CVE-2018-14009/): Codiad remote code execution vulnerability (critical 9.8)
- [CVE-2017-11366](https://insights.sbomify.com/CVE-2017-11366/): Codiad Vulnerable to Shell Command Injection (critical 9.8)
- [CVE-2020-14043](https://insights.sbomify.com/CVE-2020-14043/): Codiad CSRF Vulnerability (high 8.8)
- [CVE-2017-1000125](https://insights.sbomify.com/CVE-2017-1000125/): File upload in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-23355 and fix it if it is affected.

What it is: CVE-2020-23355 is a high-severity authentication bypass vulnerability in n/a, published on 27 Jan 2021. 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-2020-23355 in the wild and no public exploit code.

Affected packages and fixed versions:
- codiad/codiad (Packagist): affected all versions up to 2.8.4; no fix listed
- codiad/codiad (Packagist): affected all versions up to 2.8.4; no fix listed

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-2020-23355/ (Markdown: https://insights.sbomify.com/CVE-2020-23355/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-23355
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-23355
- OSV: https://osv.dev/vulnerability/CVE-2020-23355

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-23355/
Summaries are generated and may contain mistakes; the official description above is the record.