Two vulnerabilities have been reported in FreeRADIUS, which can be exploited by malicious people to cause a DoS (Denial of Service).
1) An error when processing requests queued for more than 30 seconds in main/event.c can be exploited to cause the process to crash by sending high volume of requests for an extended period of time.
2) An error when processing DHCP requests with the "Relay Agent Information" option (82) in lib/dhcp.c can be exploited to cause an infinite loop in the process denying further requests via a packet with multiple sub-options.
The vulnerabilities are reported in version 2.1.9. Other versions may also be affected.
Solution: Update to version 2.1.10.
Provided and/or discovered by: Reported in a bug report by:
1) Florence Faure
2) Ilya A. Masandilov
Original Advisory: http://freeradius.org/press/index.html#2.1.10
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Subject: FreeRADIUS Two Denial of Service Vulnerabilities
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