# CVE-2018-8955: Code injection in n/a

> Remote attackers can execute arbitrary code by manipulating the installer filename to alter metadata URLs, bypassing digital signature checks.

- **Severity:** Critical 9.8 (`CVSS:3.0/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:** 24 Oct 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-mf9c-7798-47gf

## What is CVE-2018-8955?

CVE-2018-8955 is a critical code injection vulnerability in n/a, published on 24 Oct 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The installer for BitDefender GravityZone relies on an encoded string in a filename to determine the URL for installation metadata, which allows remote attackers to execute arbitrary code by changing the filename while leaving the file's digital signature unchanged.

Weakness: CWE-347 (Improper Verification of Cryptographic Signature)

## Which versions are affected by CVE-2018-8955?

It affects 1 product.


Products: Bitdefender Gravityzone.

## How do I fix CVE-2018-8955?

No fix has been published for CVE-2018-8955 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-8955 being exploited?

There is no known exploitation of CVE-2018-8955 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2017-8931](https://insights.sbomify.com/CVE-2017-8931/): Privilege escalation in n/a (critical 9.8)
- [CVE-2025-2244](https://insights.sbomify.com/CVE-2025-2244/): Insecure PHP deserialization issue in GravityZone Console (VA-12634) (critical 9.5)
- [CVE-2024-6980](https://insights.sbomify.com/CVE-2024-6980/): Verbose error handling issue in GravityZone Update Server proxy service (critical 9.2)
- [CVE-2022-2830](https://insights.sbomify.com/CVE-2022-2830/): Deserialization of Untrusted Data in GravityZone Console On-Premise (VA-10573) (high 8.8)
- [CVE-2024-4177](https://insights.sbomify.com/CVE-2024-4177/): Host whitelist parser issue in GravityZone Console On-Premise (VA-11554) (high 8.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-8955 and fix it if it is affected.

What it is: CVE-2018-8955 is a critical code injection vulnerability in n/a, published on 24 Oct 2018. 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-2018-8955 in the wild and no public exploit code.

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-2018-8955/ (Markdown: https://insights.sbomify.com/CVE-2018-8955/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-8955
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-8955
- OSV: https://osv.dev/vulnerability/CVE-2018-8955

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-8955/
Summaries are generated and may contain mistakes; the official description above is the record.