# CVE-2018-6703: Remote Logging functionality had a use after free vulnerability in McAfee Agent

> Remote attackers can cause denial of service or execute code via a use-after-free in the disabled-by-default remote logging service.

- **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:** 11 Dec 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-3g76-65rh-62w4

## What is CVE-2018-6703?

CVE-2018-6703 is a critical use after free vulnerability in McAfee, LLC McAfee Agent, published on 11 Dec 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Use After Free in Remote logging (which is disabled by default) in McAfee McAfee Agent (MA) 5.x prior to 5.6.0 allows remote unauthenticated attackers to cause a Denial of Service and potentially a remote code execution via a specially crafted HTTP header sent to the logging service.

Weakness: CWE-416 (Use After Free)

## Which versions are affected by CVE-2018-6703?

It affects 1 product.


Products: Mcafee Agent.

## How do I fix CVE-2018-6703?

No fix has been published for CVE-2018-6703 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-6703 being exploited?

There is no known exploitation of CVE-2018-6703 in the wild and no public exploit code.

## Other vulnerabilities in McAfee, LLC McAfee Agent

- [CVE-2022-1258](https://insights.sbomify.com/CVE-2022-1258/): SQL injection vulnerability in McAfee Agent's ePO extension (high 8.4)
- [CVE-2022-2313](https://insights.sbomify.com/CVE-2022-2313/): DLL high jacking in Trellix Agent (high 8.2)
- [CVE-2021-31847](https://insights.sbomify.com/CVE-2021-31847/): Improper privilege management in repair process of MA for Windows (high 8.2)
- [CVE-2022-1256](https://insights.sbomify.com/CVE-2022-1256/): Improper Privilege Management in McAfee Agent for Windows (high 7.8)
- [CVE-2022-0166](https://insights.sbomify.com/CVE-2022-0166/): Privilege escalation vulnerability in McAfee Agent (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-6703 and fix it if it is affected.

What it is: CVE-2018-6703 is a critical use after free vulnerability in McAfee, LLC McAfee Agent, published on 11 Dec 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-2018-6703 in the wild and no public exploit code.

Affected product: McAfee, LLC McAfee Agent. 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-2018-6703/ (Markdown: https://insights.sbomify.com/CVE-2018-6703/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-6703
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-6703
- OSV: https://osv.dev/vulnerability/CVE-2018-6703

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-6703/
Summaries are generated and may contain mistakes; the official description above is the record.