#VU7556 Out-of-bounds read in FreeRADIUS - CVE-2017-10982

Vulnerability identifier: #VU7556

Vulnerability risk: Low

CVSSv4.0: 4.9 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-10982

CWE-ID: CWE-125

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 fr_dhcp_decode_options() function when processing DHCP packets. A remote attacker on local network can send specially crafted DHCP packets with malicious 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

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External links
https://freeradius.org/security/fuzzer-2017.html#FR-GV-205

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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 local network (LAN).

Is there known malware, which exploits this vulnerability?

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