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CVE-2017-9148· NVD / CVE Program· CNA mitre

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

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.

CriticalCVSS 9.8 · v3.0—No exploit Fix available
Published
May 29, 2017
Updated
Jun 16, 2026
EPSS
3.9% · 90th percentile
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JSON

Action score

40

Plan

Add it to your regular patch cycle.

CVSS
39 / 40 · 9.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
1 / 30 · 3.9%

Affected systems

VendorProduct
freeradiusfreeradius

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • freeradius freeradius2.1.1
  • freeradius freeradius2.1.2
  • freeradius freeradius2.1.3
  • freeradius freeradius2.1.4
  • freeradius freeradius2.1.6
  • freeradius freeradius2.1.7
  • freeradius freeradius3.0.0
  • freeradius freeradius3.0.1
  • freeradius freeradius3.0.2
  • freeradius freeradius3.0.3
  • freeradius freeradius3.0.4
  • freeradius freeradius3.0.5
  • freeradius freeradius3.0.6
  • freeradius freeradius3.0.7
  • freeradius freeradius3.0.8
  • freeradius freeradius3.0.9
  • freeradius freeradius3.1.0
  • freeradius freeradius3.1.1
  • freeradius freeradius3.1.2
  • freeradius freeradius3.1.3

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12freeradiusbefore 3.0.12+dfsg-53.0.12+dfsg-5
Debian:7freeradiusbefore 2.1.12+dfsg-1.2+deb7u12.1.12+dfsg-1.2+deb7u1
openSUSE:Tumbleweedfreeradius-serverbefore 3.0.23-1.53.0.23-1.5
Red Hat:enterprise_linux:7::serverfreeradiusbefore 0:3.0.4-8.el7_30:3.0.4-8.el7_3
Red Hat:enterprise_linux:7::serverfreeradius-debuginfobefore 0:3.0.4-8.el7_30:3.0.4-8.el7_3
Red Hat:enterprise_linux:7::serverfreeradius-develbefore 0:3.0.4-8.el7_30:3.0.4-8.el7_3
Red Hat:enterprise_linux:7::serverfreeradius-docbefore 0:3.0.4-8.el7_30:3.0.4-8.el7_3
Red Hat:enterprise_linux:7::serverfreeradius-krb5before 0:3.0.4-8.el7_30:3.0.4-8.el7_3
Red Hat:enterprise_linux:7::serverfreeradius-ldapbefore 0:3.0.4-8.el7_30:3.0.4-8.el7_3
Red Hat:enterprise_linux:7::serverfreeradius-mysqlbefore 0:3.0.4-8.el7_30:3.0.4-8.el7_3
Red Hat:enterprise_linux:7::serverfreeradius-perlbefore 0:3.0.4-8.el7_30:3.0.4-8.el7_3
Red Hat:enterprise_linux:7::serverfreeradius-postgresqlbefore 0:3.0.4-8.el7_30:3.0.4-8.el7_3
Red Hat:enterprise_linux:7::serverfreeradius-pythonbefore 0:3.0.4-8.el7_30:3.0.4-8.el7_3
Red Hat:enterprise_linux:7::serverfreeradius-sqlitebefore 0:3.0.4-8.el7_30:3.0.4-8.el7_3
Red Hat:enterprise_linux:7::serverfreeradius-unixODBCbefore 0:3.0.4-8.el7_30:3.0.4-8.el7_3
Red Hat:enterprise_linux:7::serverfreeradius-utilsbefore 0:3.0.4-8.el7_30:3.0.4-8.el7_3
SUSE:Linux Enterprise Server for Raspberry Pi 12 SP2freeradius-serverbefore 3.0.3-17.4.13.0.3-17.4.1
SUSE:Linux Enterprise Software Development Kit 11 SP4freeradius-serverbefore 2.1.1-7.24.12.1.1-7.24.1

Same product

freeradius: all records

Other highest-scoring records for the same primary product.

  • CVE-2019-11234FreeRADIUS before 3.0.19 does not prevent use of reflection for authentication spoofing, aka a "Dragonblood" issue, a similar issue to CVE-2
    41Plan
  • CVE-2017-10984An FR-GV-301 issue in FreeRADIUS 3.x before 3.0.15 allows "Write overflow in data2vp_wimax()" - this allows remote attackers to cause a deni
    41Plan
  • CVE-2017-10979An FR-GV-202 issue in FreeRADIUS 2.x before 2.2.10 allows "Write overflow in rad_coalesce()" - this allows remote attackers to cause a denia
    41Plan
  • CVE-2003-0968Stack-based buffer overflow in SMB_Logon_Server of the rlm_smb experimental module for FreeRADIUS 0.9.3 and earlier allows remote attackers
    41Plan
  • CVE-2024-3596RADIUS Protocol under RFC2865 is vulnerable to forgery attacks.
    40Plan
  • CVE-2019-11235FreeRADIUS before 3.0.19 mishandles the "each participant verifies that the received scalar is within a range, and that the received group e
    40Plan

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:freeradius3.0.12+dfsg-5 · Debian:12Package registry (OSV)
opensuse:freeradius-server3.0.23-1.5 · openSUSE:TumbleweedPackage registry (OSV)
red hat:freeradius0:3.0.4-8.el7_3 · Red Hat:enterprise_linux:7::serverPackage registry (OSV)
red hat:freeradius-debuginfo0:3.0.4-8.el7_3 · Red Hat:enterprise_linux:7::serverPackage registry (OSV)
red hat:freeradius-devel0:3.0.4-8.el7_3 · Red Hat:enterprise_linux:7::serverPackage registry (OSV)
red hat:freeradius-doc0:3.0.4-8.el7_3 · Red Hat:enterprise_linux:7::serverPackage registry (OSV)
red hat:freeradius-krb50:3.0.4-8.el7_3 · Red Hat:enterprise_linux:7::serverPackage registry (OSV)
red hat:freeradius-ldap0:3.0.4-8.el7_3 · Red Hat:enterprise_linux:7::serverPackage registry (OSV)
red hat:freeradius-mysql0:3.0.4-8.el7_3 · Red Hat:enterprise_linux:7::serverPackage registry (OSV)
red hat:freeradius-perl0:3.0.4-8.el7_3 · Red Hat:enterprise_linux:7::serverPackage registry (OSV)
red hat:freeradius-postgresql0:3.0.4-8.el7_3 · Red Hat:enterprise_linux:7::serverPackage registry (OSV)
red hat:freeradius-python0:3.0.4-8.el7_3 · Red Hat:enterprise_linux:7::serverPackage registry (OSV)
red hat:freeradius-sqlite0:3.0.4-8.el7_3 · Red Hat:enterprise_linux:7::serverPackage registry (OSV)
red hat:freeradius-unixODBC0:3.0.4-8.el7_3 · Red Hat:enterprise_linux:7::serverPackage registry (OSV)
suse:freeradius-server3.0.3-17.4.1 · SUSE:Linux Enterprise Server for Raspberry Pi 12 SP2Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-287 · Improper Authentication

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvd-primary

Root cause

Authentication is added route by route instead of being enforced in one place. When a route added later bypasses the shared middleware, the session check never runs for it.

The bug in code

The whole CWE-287 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

ts
app.use("/admin", requireSession, adminRouter);
// Route added later skips the middlewareapp.post("/admin-api/config", updateConfig);

Fixed

ts
const admin = express.Router();admin.use(requireSession, requireRole("admin"));
admin.post("/config", updateConfig);app.use("/admin", admin);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records