freeradius: TLS resumption authentication bypass
Published May 29, 2017
9.8
CRITICALCVSS 3.0
EPSS 3.91%
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.
Affected products
No data.
- 2.1.1
- 2.1.2
- 2.1.3
- 2.1.4
- 2.1.6
- 2.1.7
- 3.0.0
- 3.0.1
- 3.0.2
- 3.0.3
- 3.0.4
- 3.0.5
- 3.0.6
- 3.0.7
- 3.0.8
- 3.0.9
- 3.1.0
- 3.1.1
- 3.1.2
- 3.1.3
- 4.0.0
No data.
Red Hat Enterprise Linux 7
freeradius-0:3.0.4-8.el7_3
Fixed · RHSA-2017:1581
Red Hat Enterprise Linux 5
freeradius
Not affected
Red Hat Enterprise Linux 5
freeradius2
Not affected
Red Hat Enterprise Linux 6
freeradius
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | freeradius-0:3.0.4-8.el7_3 | Fixed | RHSA-2017:1581 |
| Red Hat Enterprise Linux 5 | freeradius | Not affected | n/a |
| Red Hat Enterprise Linux 5 | freeradius2 | Not affected | n/a |
| Red Hat Enterprise Linux 6 | freeradius | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat mitigation
Disable TLS session caching in FreeRADIUS by setting "enable = no" in the cache subsection of EAP module settings, which are in /etc/raddb/mods-available/eap file.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
AV:N/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (18 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.91% (0.03914) | 89.98th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.91% (0.03914) | 88.92th | v5 (v2026.06.15) |
| Mar 30, 2025 | 1.21% (0.01209) | 77.12th | v4 (v2025.03.14) |
| Mar 29, 2025 | 4.29% (0.04295) | 81.09th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.60% (0.01603) | 80.45th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.70% (0.00698) | 80.92th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.70% (0.00698) | 79.62th | v3 (v2023.03.01) |
| May 8, 2023 | 0.70% (0.00698) | 77.32th | v3 (v2023.03.01) |
| Mar 14, 2023 | 0.83% (0.00831) | 79.41th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.18% (0.01175) | 82.79th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.32% (0.01319) | 71.27th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.32% (0.01319) | 71.23th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.32% (0.01319) | 69.22th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.32% (0.01319) | 44.98th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.82% (0.01823) | 35.21th | v1 |
| Jan 6, 2022 | 1.82% (0.01823) | 34.51th | v1 |
| Sep 1, 2021 | 1.82% (0.01823) | 74.64th | v1 |
| Apr 14, 2021 | 1.82% (0.01823) | 0.00th | v1 |
References (10)
- http://freeradius.org/security.html x_refsource_MISCNot Applicable
- http://seclists.org/oss-sec/2017/q2/422 x_refsource_MISCMailing ListVDB Entry
- http://www.securityfocus.com/bid/98734 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1038576 vdb-entryx_refsource_SECTRACK
- https://access.redhat.com/errata/RHSA-2017:1581 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2017-9148 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1456697 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2017-9148
- https://security.gentoo.org/glsa/201706-27 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2017-9148
| Link | Providers | Tags |
|---|---|---|
| http://freeradius.org/security.html | x_refsource_MISCNot Applicable | |
| http://seclists.org/oss-sec/2017/q2/422 | x_refsource_MISCMailing ListVDB Entry | |
| http://www.securityfocus.com/bid/98734 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1038576 | vdb-entryx_refsource_SECTRACK | |
| https://access.redhat.com/errata/RHSA-2017:1581 | vendor-advisoryx_refsource_REDHAT | |
| https://access.redhat.com/security/cve/CVE-2017-9148 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1456697 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-9148 | ||
| https://security.gentoo.org/glsa/201706-27 | vendor-advisoryx_refsource_GENTOO | |
| https://www.cve.org/CVERecord?id=CVE-2017-9148 |
Change history (0)
No recorded changes yet.