Auth bypass in Freeradius
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 reliably prevent resumption of an unauthenticated session, which allows remote attackers (such as malicious 802.1X supplicants) to bypass authentication via PEAP or TTLS.
Vulnerability class: Broken Authentication
EPSS: 0.039 (89.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Freeradius — versions 2.1.1, 2.1.2, 2.1.3
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (x_refsource_MISC, Not Applicable)
- cve@mitre.org (Mailing List, VDB Entry, x_refsource_MISC)
- cve@mitre.org (x_refsource_REDHAT, vendor-advisory)
- cve@mitre.org (vdb-entry, x_refsource_SECTRACK)
- cve@mitre.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
- cve@mitre.org (vendor-advisory, x_refsource_GENTOO)
Frequently asked questions
- What is CVE-2017-9148?
- CVE-2017-9148 is a critical-severity vulnerability in Freeradius, classified under Improper Authentication. CVSS score: 9.8/10. Published 2017-05-29.
- How severe is CVE-2017-9148?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2017-9148 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.