CVE-2018-1066

kernel: Null pointer dereference in fs/cifs/cifsencrypt.c:setup_ntlmv2_rsp() when empty TargetInfo is returned in NTLMSSP setup negotiation response allowing to crash client's kernel

Severity Score

6.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

El kernel de Linux, en versiones anteriores a la 4.11, es vulnerable a una desreferencia de puntero NULL en fs/cifs/cifsencrypt.c:setup_ntlmv2_rsp() que permite que un atacante que controla un servidor CIFS provoque un pánico en un cliente con el servidor montado, debido a que un campo TargetInfo en una respuesta de negociación de instalación NTLMSSP se gestiona de manera incorrecta durante la recuperación de sesión.

A flaw was found in the Linux kernel's client-side implementation of the cifs protocol. This flaw allows an attacker controlling the server to kernel panic a client which has the CIFS server mounted.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-12-04 CVE Reserved
2018-03-02 CVE Published
2023-09-26 EPSS Updated
2024-08-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-476: NULL Pointer Dereference

CAPEC

References (12)

URL	Tag	Source
http://www.securityfocus.com/bid/103378	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/07/msg00015.html	Mailing List
https://lists.debian.org/debian-lts-announce/2018/07/msg00016.html	Mailing List

URL	Date	SRC

URL	Date	SRC
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=cabfb3680f78981d26c078a26e5c748531257ebb	2019-04-23
https://github.com/torvalds/linux/commit/cabfb3680f78981d26c078a26e5c748531257ebb	2019-04-23
https://patchwork.kernel.org/patch/10187633	2019-04-23

URL	Date	SRC
https://bugzilla.redhat.com/show_bug.cgi?id=1539599	2018-04-10
https://usn.ubuntu.com/3880-1	2019-04-23
https://usn.ubuntu.com/3880-2	2019-04-23
https://www.debian.org/security/2018/dsa-4187	2019-04-23
https://www.debian.org/security/2018/dsa-4188	2019-04-23
https://access.redhat.com/security/cve/CVE-2018-1066	2018-04-10

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				<= 4.10.15 Search vendor "Linux" for product "Linux Kernel" and version " <= 4.10.15"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				12.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "12.04"		esm		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04"		lts		Affected