# CVE-2015-5370: Samba 3.x and 4.x before 4.2.11, 4.3.x before 4.3.8, and 4.4.x before 4.4.2 does not properly implement the DCE-RPC layer, which allows remo


- **Severity:** Medium 5.9 (`CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Fix available:** Yes
- **Published:** 25 Apr 2016
- **Updated:** 6 Aug 2024
- **Also known as:** DEBIAN-CVE-2015-5370, ECHO-e300-a541-3dc2, GHSA-mcw7-q6mc-p58r, UBUNTU-CVE-2015-5370

## What is CVE-2015-5370?

CVE-2015-5370 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 25 Apr 2016. 

### Official description

Samba 3.x and 4.x before 4.2.11, 4.3.x before 4.3.8, and 4.4.x before 4.4.2 does not properly implement the DCE-RPC layer, which allows remote attackers to perform protocol-downgrade attacks, cause a denial of service (application crash or CPU consumption), or possibly execute arbitrary code on a client system via unspecified vectors.

## Which versions are affected by CVE-2015-5370?

It affects 2 products.


Products: Canonical Ubuntu Linux, Samba Samba.

## How do I fix CVE-2015-5370?

Upgrade to a fixed version.

## Is CVE-2015-5370 being exploited?

There is no known exploitation of CVE-2015-5370 in the wild and no public exploit code.

## Other vulnerabilities in Canonical Ubuntu Linux

- [CVE-2020-11651](https://insights.sbomify.com/CVE-2020-11651/): SaltStack Salt Authentication Bypass (critical 9.8, exploited in the wild)
- [CVE-2020-7247](https://insights.sbomify.com/CVE-2020-7247/): OpenSMTPD Remote Code Execution (critical 9.8, exploited in the wild)
- [CVE-2019-16928](https://insights.sbomify.com/CVE-2019-16928/): Exim Out-of-bounds Write (critical 9.8, exploited in the wild)
- [CVE-2018-6789](https://insights.sbomify.com/CVE-2018-6789/): Exim Buffer Overflow (critical 9.8, exploited in the wild)
- [CVE-2015-2590](https://insights.sbomify.com/CVE-2015-2590/): Oracle Java SE and Java SE Embedded Remote Code Execution (critical 9.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2015-5370 and fix it if it is affected.

What it is: CVE-2015-5370 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 25 Apr 2016. 
Exploitation: There is no known exploitation of CVE-2015-5370 in the wild and no public exploit code.

Affected product: Canonical Ubuntu Linux. 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-2015-5370/ (Markdown: https://insights.sbomify.com/CVE-2015-5370/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2015-5370
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2015-5370
- OSV: https://osv.dev/vulnerability/CVE-2015-5370

---
From sbomify Insights: https://insights.sbomify.com/CVE-2015-5370/
Summaries are generated and may contain mistakes; the official description above is the record.