NULL Pointer Dereference Vulnerability in CIFS Server Setup

CVE-2018-1066 · HIGH Severity

AV:N/AC:M/AU:N/C:N/I:N/A:C

The Linux kernel before version 4.11 is vulnerable to a NULL pointer dereference in fs/cifs/cifsencrypt.c:setup_ntlmv2_rsp() that allows an attacker controlling a CIFS server to kernel panic a client that has this server mounted, because an empty TargetInfo field in an NTLMSSP setup negotiation response is mishandled during session recovery.

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