Vulnerability identifier: #VU7559

Vulnerability risk: Medium

CVSSv3.1: 7.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-10985

CWE-ID: CWE-835

Exploitation vector: 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 attack.

The vulnerability exists due to infinite loop when processing specially crafted RADIUS packets. A remote attacker can send 4f 02, 89 02, 90 02, or b4 02 attribute data and perform a denial of service attack.

Successful exploitation of the vulnerability may allow an attacker to exhaust all available memory on the system and render the system unresponsive.

Mitigation
Update to version 3.0.15.

Vulnerable software versions

FreeRADIUS: 3.0.0 - 3.0.14

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External links
http://freeradius.org/security/fuzzer-2017.html#FR-GV-302

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.