#VU7553 Buffer overflow in FreeRADIUS - CVE-2017-10979

Vulnerability identifier: #VU7553

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2017-10979

CWE-ID: CWE-119

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 execute arbitrary code on the target system.

The vulnerability exists due to boundary error when processing RADIUS packets in rad_coalesce() function. A remote unauthenticated attacker can send a specially crafted packet with iverly long WiMAX attribute, trigger buffer overflow and crash the affected server or execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Update to version 2.2.10.

Vulnerable software versions

FreeRADIUS: 2.2.0 - 2.2.9

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External links
https://freeradius.org/security/fuzzer-2017.html#FR-GV-202

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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.