# CVE-2023-27576: Auth bypass in n/a

> Attackers can bypass email confirmation to change super admin credentials and take over the account via manipulated ID parameters.

- **Severity:** Medium 6.7 (`CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 18 Aug 2023
- **Updated:** 7 Oct 2024
- **Also known as:** BIT-phplist-2023-27576, GHSA-hpr7-fpw7-jcx2

## What is CVE-2023-27576?

CVE-2023-27576 is a medium-severity authentication bypass vulnerability in n/a, published on 18 Aug 2023. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

An issue was discovered in phpList before 3.6.14. Due to an access error, it was possible to manipulate and edit data of the system's super admin, allowing one to perform an account takeover of the user with super-admin permission. Specifically, for a request with updatepassword=1, a modified request (manipulating both the ID parameter and the associated username) can bypass the intended email confirmation requirement. For example, the attacker can start from an updatepassword=1 request with their own ID number, and change the ID number to 1 (representing the super admin account) and change the username to admin2. In the first step, the attacker changes the super admin's email address to one under the attacker's control. In the second step, the attacker performs a password reset for the super admin account. The new password allows login as the super admin, i.e., a successful account takeover.

Weakness: CWE-639 (Authorization Bypass Through User-Controlled Key)

## Which versions are affected by CVE-2023-27576?

1 open source package ship an affected version, including phplist. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `phplist` | Bitnami | From 3.6.12 to 3.6.12 | None |

Products: Phplist Phplist.

## How do I fix CVE-2023-27576?

No fix has been published for CVE-2023-27576 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-27576 being exploited?

There is no known exploitation of CVE-2023-27576 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2020-22249](https://insights.sbomify.com/CVE-2020-22249/): File upload in n/a (critical 9.8)
- [CVE-2020-23361](https://insights.sbomify.com/CVE-2020-23361/): Auth bypass in n/a (critical 9.8)
- [CVE-2021-3188](https://insights.sbomify.com/CVE-2021-3188/): Other in n/a (critical 9.8)
- [CVE-2020-8547](https://insights.sbomify.com/CVE-2020-8547/): Auth bypass in n/a (critical 9.8)
- [CVE-2020-15072](https://insights.sbomify.com/CVE-2020-15072/): SQL injection in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-27576 and fix it if it is affected.

What it is: CVE-2023-27576 is a medium-severity authentication bypass vulnerability in n/a, published on 18 Aug 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-27576 in the wild and no public exploit code.

Affected packages and fixed versions:
- phplist (Bitnami): affected from 3.6.12 up to 3.6.12; 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-2023-27576/ (Markdown: https://insights.sbomify.com/CVE-2023-27576/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-27576
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-27576
- OSV: https://osv.dev/vulnerability/CVE-2023-27576

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-27576/
Summaries are generated and may contain mistakes; the official description above is the record.