# CVE-2021-23146: Auth bypass in Command Center

> Attackers can bypass PIV verification in Gallagher Command Centre due to incomplete comparison logic, allowing unauthorized access.

- **Severity:** High 7.1 (`CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 18 Nov 2021
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-356x-mxw5-7m2m

## What is CVE-2021-23146?

CVE-2021-23146 is a high-severity authentication bypass vulnerability in Gallagher Command Center, published on 18 Nov 2021. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

An Incomplete Comparison with Missing Factors vulnerability in the Gallagher Controller allows an attacker to bypass PIV verification. This issue affects: Gallagher Command Centre 8.40 versions prior to 8.40.1888 (MR3); 8.30 versions prior to 8.30.1359 (MR3); 8.20 versions prior to 8.20.1259 (MR5); 8.10 versions prior to 8.10.1284 (MR7); version 8.00 and prior versions.

Weakness: CWE-697 (Incorrect Comparison), CWE-1023 (Incomplete Comparison with Missing Factors)

## Which versions are affected by CVE-2021-23146?

It affects 1 product.


Products: Gallagher Command Centre.

## How do I fix CVE-2021-23146?

No fix has been published for CVE-2021-23146 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-23146 being exploited?

There is no known exploitation of CVE-2021-23146 in the wild and no public exploit code.

## Other vulnerabilities in Gallagher Command Center

- [CVE-2021-23140](https://insights.sbomify.com/CVE-2021-23140/): Missing authorization in Command Centre (critical 9.9)
- [CVE-2021-23230](https://insights.sbomify.com/CVE-2021-23230/): SQL injection in Command Centre (critical 9.9)
- [CVE-2020-16096](https://insights.sbomify.com/CVE-2020-16096/): Missing authorization in Command Centre (critical 9.9)
- [CVE-2020-16098](https://insights.sbomify.com/CVE-2020-16098/): Information disclosure in Command Centre (critical 9.8)
- [CVE-2019-15294](https://insights.sbomify.com/CVE-2019-15294/): Information disclosure in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-23146 and fix it if it is affected.

What it is: CVE-2021-23146 is a high-severity authentication bypass vulnerability in Gallagher Command Center, published on 18 Nov 2021. 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-2021-23146 in the wild and no public exploit code.

Affected product: Gallagher Command Center. 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-2021-23146/ (Markdown: https://insights.sbomify.com/CVE-2021-23146/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-23146
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-23146
- OSV: https://osv.dev/vulnerability/CVE-2021-23146

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-23146/
Summaries are generated and may contain mistakes; the official description above is the record.