Vulnerability identifier: #VU7554
Vulnerability risk: Low
CVSSv3.1: 6.4 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-401
Exploitation vector: Local network
Exploit availability: No
Vulnerable software:
FreeRADIUS
Server applications /
Directory software, identity management
Vendor: FreeRADIUS Server Project
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak in decode_tlv() function when processing DHCP packets. A remote attacker on local network can send specially crafted DHCP packets with option 82 and multiple sub-options to vulnerable system and trigger denial of service attack.
Mitigation
Update to version 2.2.10.
Vulnerable software versions
FreeRADIUS: 2.2.0 - 2.2.9
External links
http://freeradius.org/security/fuzzer-2017.html#FR-GV-203
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.