VDB-114030 · CVE-2018-1066 · BID 103459

Linux Kernel up to 4.10 CIFS fs/cifs/cifsencrypt.c setup_ntlmv2_rsp TargetInfo null pointer dereference

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CTI Interest Score
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A vulnerability classified as problematic has been found in Linux Kernel up to 4.10 (Operating System). Affected is the function setup_ntlmv2_rsp of the file fs/cifs/cifsencrypt.c of the component CIFS. The manipulation of the argument TargetInfo with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on availability. CVE summarizes:

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.

The bug was discovered 03/05/2018. The weakness was published 03/02/2018 (Website). The advisory is available at git.kernel.org. This vulnerability is traded as CVE-2018-1066 since 12/04/2017. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 108748 (SUSE SLES12 Security Update : kernel (SUSE-SU-2018:0848-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 197364 (Ubuntu Security Notification for Linux Vulnerabilities (USN-3880-1)).

Upgrading to version 4.11 eliminates this vulnerability. A possible mitigation has been published 4 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (108748) and SecurityFocus (BID 103459†).







CPE 2.3info

CPE 2.2info


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VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
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NVD Base Score: 6.5
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Class: Null pointer dereference
CWE: CWE-476 / CWE-404

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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Nessus ID: 108748
Nessus Name: SUSE SLES12 Security Update : kernel (SUSE-SU-2018:0848-1)
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OpenVAS ID: 58800
OpenVAS Name: Debian Security Advisory DSA 4187-1 (linux - security update)
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Threat Intelligenceinfo

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Recommended: Upgrade
Status: 🔍

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Upgrade: Kernel 4.11
Patch: git.kernel.org


12/04/2017 🔍
03/02/2018 +88 days 🔍
03/02/2018 +0 days 🔍
03/03/2018 +1 days 🔍
03/05/2018 +2 days 🔍
03/05/2018 +0 days 🔍
03/29/2018 +24 days 🔍
03/30/2018 +1 days 🔍
02/16/2023 +1784 days 🔍


Vendor: kernel.org

Advisory: cabfb3680f78981d26c078a26e5c748531257ebb
Status: Confirmed

CVE: CVE-2018-1066 (🔍)

SecurityFocus: 103459 - Linux Kernel CVE-2018-1068 Local Privilege Escalation Vulnerability


Created: 03/03/2018 02:29 PM
Updated: 02/16/2023 03:35 PM
Changes: 03/03/2018 02:29 PM (81), 01/10/2020 09:03 AM (4), 02/16/2023 03:30 PM (5), 02/16/2023 03:35 PM (1)
Complete: 🔍
Cache ID: 44:F6E:40


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