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Vulnerability record · CVE-2017-9148 · published 29 May 2017

CVE-2017-9148: Freeradius improper authentication vulnerability

Freeradius · Freeradius

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.

9.8 CVSS 3.0 Critical EPSS 3.9% · top 10.1% CWE-287 · Improper authentication
9.8CVSS 3.0 base score, v2 7.5
3.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
12References
17 Jun 2026Last modified by NVD

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://freeradius.org/security.html Not Applicable
http://seclists.org/oss-sec/2017/q2/422 Mailing ListVDB Entry
http://www.securityfocus.com/bid/98734 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1038576
https://access.redhat.com/errata/RHSA-2017:1581
https://security.gentoo.org/glsa/201706-27
http://freeradius.org/security.html Not Applicable
http://seclists.org/oss-sec/2017/q2/422 Mailing ListVDB Entry
http://www.securityfocus.com/bid/98734 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1038576
https://access.redhat.com/errata/RHSA-2017:1581
https://security.gentoo.org/glsa/201706-27

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2019-11234Freeradius improper authentication vulnerabilityFreeRADIUS before 3.0.19 does not prevent use of reflection for authentication spoofing, aka a "Dragonblood" issue, a similar issue to CVE-2019-9497.EPSS 7.6%9.8CVE-2019-11235Freeradius insufficient verification of data authenticity vulnerabilityFreeRADIUS before 3.0.19 mishandles the "each participant verifies that the received scalar is within a range, and that the received group element is…EPSS 3.6%9.8CVE-2017-10979Freeradius out-of-bounds write vulnerabilityAn 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 denial of serv…EPSS 7.0%9.8CVE-2017-10984Freeradius out-of-bounds write vulnerabilityAn 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 denial of ser…EPSS 6.4%9.0CVE-2024-3596Freeradius vulnerabilityRADIUS Protocol under RFC 2865 is susceptible to forgery attacks by a local attacker who can modify any valid Response (Access-Accept, Access-Reject,…EPSS 15%8.1CVE-2015-8763Freeradius out-of-bounds read vulnerabilityThe EAP-PWD module in FreeRADIUS 3.0 through 3.0.8 allows remote attackers to have unspecified impact via a crafted (1) commit or (2) confirm message…EPSS 1.2%8.1CVE-2015-8764Freeradius memory buffer overflow vulnerabilityOff-by-one error in the EAP-PWD module in FreeRADIUS 3.0 through 3.0.8, which triggers a buffer overflow.EPSS 1.1%7.8CVE-2005-4746Freeradius vulnerabilityMultiple buffer overflows in FreeRADIUS 1.0.3 and 1.0.4 allow remote attackers to cause denial of service (crash) via (1) the rlm_sqlcounter module o…EPSS 2.4%

Source: NIST National Vulnerability Database (record CVE-2017-9148), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.