# CVE-2023-1778: Default Credential Vulnerability in GajShield Data Security Firewall

> Remote attackers can log in as superuser using default credentials to execute arbitrary commands on GajShield Data Security Firewall devices.

- **Severity:** Critical 10.0 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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:** 27 Apr 2023
- **Updated:** 30 Jan 2025
- **Also known as:** GHSA-f9gp-vxr4-29wq

## What is CVE-2023-1778?

CVE-2023-1778 is a critical vulnerability in GajShield Data Security Firewall, published on 27 Apr 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

This vulnerability exists in GajShield Data Security Firewall firmware versions prior to v4.28 (except v4.21) due to insecure default credentials which allows remote attacker to login as superuser by using default username/password via web-based management interface and/or exposed SSH port thereby enabling remote attackers to execute arbitrary commands with administrative/superuser privileges on the targeted systems.

The vulnerability has been addressed by forcing the user to change their default password to a new non-default password.

Weakness: CWE-522 (Insufficiently Protected Credentials), CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2023-1778?

It affects 1 product.


Products: Gajshield Data Security Firewall Firmware.

## How do I fix CVE-2023-1778?

No fix has been published for CVE-2023-1778 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-1778 being exploited?

There is no known exploitation of CVE-2023-1778 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-1778 and fix it if it is affected.

What it is: CVE-2023-1778 is a critical vulnerability in GajShield Data Security Firewall, published on 27 Apr 2023. 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-2023-1778 in the wild and no public exploit code.

Affected product: GajShield Data Security Firewall. 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-2023-1778/ (Markdown: https://insights.sbomify.com/CVE-2023-1778/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-1778
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-1778
- OSV: https://osv.dev/vulnerability/CVE-2023-1778

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-1778/
Summaries are generated and may contain mistakes; the official description above is the record.