# CVE-2020-0550: Information disclosure in Snoop Assisted L1D Sampling Advisory

> An authenticated local attacker can exploit improper data forwarding in Intel processor caches to disclose sensitive information.

- **Severity:** Medium 5.6 (`CVSS:3.1/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:** 12 Mar 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-xw3h-h52h-wq24, UBUNTU-CVE-2020-0550

## What is CVE-2020-0550?

CVE-2020-0550 is a medium-severity vulnerability in Intel Snoop Assisted L1D Sampling Advisory, published on 12 Mar 2020. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Improper data forwarding in some data cache for some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access. The list of affected products is provided in intel-sa-00330: https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00330.html

## Which versions are affected by CVE-2020-0550?

It affects 752 products.


Products: Intel Celeron 1000m, Intel Celeron 1005m, Intel Celeron 1007u, Intel Celeron 1017u, Intel Celeron 1019y, Intel Celeron 1020e, Intel Celeron 1020m, Intel Celeron 1037u, Intel Celeron 1047ue, Intel Celeron 2955u, Intel Celeron 2957u, Intel Celeron 2970m, Intel Celeron 2980u, Intel Celeron 2981u, Intel Celeron 3765u, Intel Celeron 725c, Intel Celeron 787, Intel Celeron 797, Intel Celeron 807, Intel Celeron 807ue and 732 more.

## How do I fix CVE-2020-0550?

No fix has been published for CVE-2020-0550 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-0550 being exploited?

There is no known exploitation of CVE-2020-0550 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-0550 and fix it if it is affected.

What it is: CVE-2020-0550 is a medium-severity vulnerability in Intel Snoop Assisted L1D Sampling Advisory, published on 12 Mar 2020. 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-2020-0550 in the wild and no public exploit code.

Affected product: Intel Snoop Assisted L1D Sampling Advisory. 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-2020-0550/ (Markdown: https://insights.sbomify.com/CVE-2020-0550/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-0550
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-0550
- OSV: https://osv.dev/vulnerability/CVE-2020-0550

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-0550/
Summaries are generated and may contain mistakes; the official description above is the record.