# CVE-2018-9056: Information disclosure in n/a

> Local attackers can exploit speculative execution side-channels to disclose sensitive information from microprocessors.

- **Severity:** Medium 5.6 (`CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N`)
- **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:** 27 Mar 2018
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-p3vf-w52m-259m

## What is CVE-2018-9056?

CVE-2018-9056 is a medium-severity vulnerability in n/a, published on 27 Mar 2018. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Systems with microprocessors utilizing speculative execution may allow unauthorized disclosure of information to an attacker with local user access via a side-channel attack on the directional branch predictor, as demonstrated by a pattern history table (PHT), aka BranchScope.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2018-9056?

It affects 209 products.


Products: Arm Cortex-A, Intel Atom C, Intel Atom E, Intel Atom X3, Intel Atom Z, Intel Celeron J, Intel Celeron N, Intel Core I3, Intel Core I5, Intel Core I7, Intel Core M, Intel Core M3, Intel Core M5, Intel Core M7, Intel Pentium J, Intel Pentium N, Intel Xeon, Intel Xeon Bronze 3104, Intel Xeon Bronze 3106, Intel Xeon E-1105c and 189 more.

## How do I fix CVE-2018-9056?

No fix has been published for CVE-2018-9056 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-9056 being exploited?

There is no known exploitation of CVE-2018-9056 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2018-3693](https://insights.sbomify.com/CVE-2018-3693/): Information disclosure in Most Modern Operating Systems (medium 5.6)
- [CVE-2018-3640](https://insights.sbomify.com/CVE-2018-3640/): Information disclosure in Multiple (medium 5.6)
- [CVE-2017-5715](https://insights.sbomify.com/CVE-2017-5715/): Information disclosure in Microprocessors with Speculative Execution (medium 5.6)
- [CVE-2017-5754](https://insights.sbomify.com/CVE-2017-5754/): Information disclosure in Most Modern Operating Systems (medium 5.6)
- [CVE-2018-3639](https://insights.sbomify.com/CVE-2018-3639/): Information disclosure in Multiple (medium 5.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-9056 and fix it if it is affected.

What it is: CVE-2018-9056 is a medium-severity vulnerability in n/a, published on 27 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-2018-9056 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-2018-9056/ (Markdown: https://insights.sbomify.com/CVE-2018-9056/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-9056
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-9056
- OSV: https://osv.dev/vulnerability/CVE-2018-9056

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-9056/
Summaries are generated and may contain mistakes; the official description above is the record.