# CVE-2018-7886: Memory corruption in n/a

> An unauthenticated local attacker can trigger a buffer overflow in the CloudMe Sync client to execute arbitrary code or cause a crash.

- **Severity:** High 7.8 (`CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 15 Mar 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-whgv-r48w-wxh3

## What is CVE-2018-7886?

CVE-2018-7886 is a high-severity memory corruption vulnerability in n/a, published on 15 Mar 2018. 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 CloudMe 1.11.0. An unauthenticated local attacker that can connect to the "CloudMe Sync" client application listening on 127.0.0.1 port 8888 can send a malicious payload causing a buffer overflow condition. This will result in code execution, as demonstrated by a TCP reverse shell, or a crash. NOTE: this vulnerability exists because of an incomplete fix for CVE-2018-6892.

Weakness: CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2018-7886?

It affects 1 product.


Products: Cloudme Sync.

## How do I fix CVE-2018-7886?

No fix has been published for CVE-2018-7886 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-7886 being exploited?

There is no known exploitation of CVE-2018-7886 in the wild and no public exploit code.

Public exploit code:

- CloudMe Sync 1.11.0 - Local Buffer Overflow (exploitdb)

## Other vulnerabilities in n/a

- [CVE-2018-6892](https://insights.sbomify.com/CVE-2018-6892/): Memory corruption in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-7886 and fix it if it is affected.

What it is: CVE-2018-7886 is a high-severity memory corruption vulnerability in n/a, published on 15 Mar 2018. 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-2018-7886 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-2018-7886/ (Markdown: https://insights.sbomify.com/CVE-2018-7886/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-7886
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-7886
- OSV: https://osv.dev/vulnerability/CVE-2018-7886

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-7886/
Summaries are generated and may contain mistakes; the official description above is the record.