# CVE-2020-35166: Information disclosure in BSAFE Crypto-C Micro Edition

> An attacker can exploit timing discrepancies in Dell BSAFE libraries to potentially recover sensitive cryptographic information.

- **Severity:** Medium 5.1 (`CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 11 Jul 2022
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-4jqg-rxh9-h7mc

## What is CVE-2020-35166?

CVE-2020-35166 is a medium-severity vulnerability in Oracle Database, published on 11 Jul 2022. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Dell BSAFE Crypto-C Micro Edition, versions before 4.1.5, and Dell BSAFE Micro Edition Suite, versions before 4.6, contain an Observable Timing Discrepancy Vulnerability.

Weakness: CWE-385 (Covert Timing Channel)

## Which versions are affected by CVE-2020-35166?

It affects 6 products.


Products: Dell Bsafe Crypto-C-Micro-Edition, Dell Bsafe Micro-Edition-Suite, Oracle Database, Oracle Http Server, Oracle Security Service, Oracle Weblogic Server Proxy Plug-In.

## How do I fix CVE-2020-35166?

No fix has been published for CVE-2020-35166 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-35166 being exploited?

There is no known exploitation of CVE-2020-35166 in the wild and no public exploit code.

## Other vulnerabilities in Oracle Database

- [CVE-2020-35169](https://insights.sbomify.com/CVE-2020-35169/): Other in Dell BSAFE Crypto-C Micro Edition (critical 9.1)
- [CVE-2020-29504](https://insights.sbomify.com/CVE-2020-29504/): Weak cryptography in BSAFE Crypto-C Micro Edition (high 7.4)
- [CVE-2020-29505](https://insights.sbomify.com/CVE-2020-29505/): Weak cryptography in Dell BSAFE Crypto-C Micro Edition (high 7.1)
- [CVE-2020-29506](https://insights.sbomify.com/CVE-2020-29506/): Information disclosure in Dell BSAFE Crypto-C Micro Edition (medium 6.8)
- [CVE-2020-35164](https://insights.sbomify.com/CVE-2020-35164/): Information disclosure in Dell BSAFE Crypto-C Micro Edition (medium 6.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-35166 and fix it if it is affected.

What it is: CVE-2020-35166 is a medium-severity vulnerability in Oracle Database, published on 11 Jul 2022. 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-2020-35166 in the wild and no public exploit code.

Affected product: Oracle Database. 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-2020-35166/ (Markdown: https://insights.sbomify.com/CVE-2020-35166/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-35166
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-35166
- OSV: https://osv.dev/vulnerability/CVE-2020-35166

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-35166/
Summaries are generated and may contain mistakes; the official description above is the record.