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CVE-2018-1066

Published: 2 March 2018

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.

From the Ubuntu Security Team

It was discovered that the CIFS client implementation in the Linux kernel did not properly handle setup negotiation during session recovery, leading to a NULL pointer exception. An attacker could use this to create a malicious CIFS server that caused a denial of service (client system crash).

Priority

Medium

Cvss 3 Severity Score

6.5

Score breakdown

Status

Package Release Status
linux-armadaxp
Launchpad, Ubuntu, Debian
bionic Does not exist

upstream
Released (4.11~rc1)
artful Does not exist

cosmic Does not exist

trusty Does not exist

xenial Does not exist

This package is not directly supported by the Ubuntu Security Team
linux-aws
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1001.1)
upstream
Released (4.11~rc1)
artful Does not exist

cosmic Not vulnerable
(4.15.0-1007.7)
trusty Not vulnerable
(4.4.0-1002.2)
xenial
Released (4.4.0-1026.35)
linux-aws-hwe
Launchpad, Ubuntu, Debian
bionic Does not exist

upstream
Released (4.11~rc1)
cosmic Does not exist

trusty Does not exist

xenial Not vulnerable
(4.15.0-1030.31~16.04.1)
linux-azure
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1002.2)
upstream
Released (4.11~rc1)
artful Does not exist

cosmic Not vulnerable
(4.15.0-1009.9)
trusty Not vulnerable
(4.15.0-1023.24~14.04.1)
xenial Not vulnerable
(4.11.0-1009.9)
linux-azure-edge
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.18.0-1006.6~18.04.1)
upstream
Released (4.11~rc1)
cosmic Does not exist

trusty Does not exist

xenial Not vulnerable
(4.13.0-1003.3)
linux-euclid
Launchpad, Ubuntu, Debian
bionic Does not exist

upstream
Released (4.11~rc1)
artful Does not exist

cosmic Does not exist

trusty Does not exist

xenial Ignored
(was needed ESM criteria)
linux-flo
Launchpad, Ubuntu, Debian
bionic Does not exist

upstream
Released (4.11~rc1)
artful Does not exist

cosmic Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
xenial Ignored
(abandoned)
linux-gcp
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1001.1)
upstream
Released (4.11~rc1)
artful Does not exist

cosmic Not vulnerable
(4.15.0-1006.6)
trusty Does not exist

xenial Not vulnerable
(4.10.0-1004.4)
linux-gcp-edge
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.18.0-1004.5~18.04.1)
upstream
Released (4.11~rc1)
cosmic Does not exist

trusty Does not exist

xenial Does not exist

linux-gke
Launchpad, Ubuntu, Debian
bionic Does not exist

upstream
Released (4.11~rc1)
artful Does not exist

cosmic Does not exist

trusty Does not exist

xenial
Released (4.4.0-1022.22)
linux-goldfish
Launchpad, Ubuntu, Debian
bionic Does not exist

upstream
Released (4.11~rc1)
trusty Does not exist
(trusty was ignored [abandoned])
artful Does not exist

cosmic Does not exist

xenial Ignored
(end of life, was needed)
linux-grouper
Launchpad, Ubuntu, Debian
bionic Does not exist

upstream
Released (4.11~rc1)
artful Does not exist

cosmic Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
xenial Does not exist

linux-oracle
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(4.15.0-1007.9)
cosmic Not vulnerable

trusty Does not exist

upstream
Released (4.11~rc1)
xenial Not vulnerable
(4.15.0-1007.9~16.04.1)
linux
Launchpad, Ubuntu, Debian
artful Not vulnerable
(4.10.0-19.21)
cosmic Not vulnerable
(4.15.0-20.21)
trusty
Released (3.13.0-165.215)
xenial
Released (4.4.0-87.110)
bionic Not vulnerable
(4.13.0-16.19)
upstream
Released (4.11~rc1)
Patches:
Introduced by

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2

Fixed by cabfb3680f78981d26c078a26e5c748531257ebb
linux-linaro-omap
Launchpad, Ubuntu, Debian
artful Does not exist

cosmic Does not exist

trusty Does not exist

xenial Does not exist

bionic Does not exist

upstream
Released (4.11~rc1)
linux-linaro-shared
Launchpad, Ubuntu, Debian
artful Does not exist

cosmic Does not exist

trusty Does not exist

xenial Does not exist

bionic Does not exist

upstream
Released (4.11~rc1)
linux-linaro-vexpress
Launchpad, Ubuntu, Debian
artful Does not exist

cosmic Does not exist

trusty Does not exist

xenial Does not exist

bionic Does not exist

upstream
Released (4.11~rc1)
linux-lts-quantal
Launchpad, Ubuntu, Debian
artful Does not exist

cosmic Does not exist

trusty Does not exist

xenial Does not exist

bionic Does not exist

upstream
Released (4.11~rc1)
This package is not directly supported by the Ubuntu Security Team
linux-lts-raring
Launchpad, Ubuntu, Debian
artful Does not exist

cosmic Does not exist

trusty Does not exist

xenial Does not exist

bionic Does not exist

upstream
Released (4.11~rc1)
linux-lts-saucy
Launchpad, Ubuntu, Debian
artful Does not exist

cosmic Does not exist

trusty Does not exist

xenial Does not exist

bionic Does not exist

upstream
Released (4.11~rc1)
This package is not directly supported by the Ubuntu Security Team
linux-lts-trusty
Launchpad, Ubuntu, Debian
artful Does not exist

cosmic Does not exist

trusty Does not exist

xenial Does not exist

bionic Does not exist

upstream
Released (4.11~rc1)
linux-maguro
Launchpad, Ubuntu, Debian
artful Does not exist

cosmic Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
xenial Does not exist

bionic Does not exist

upstream
Released (4.11~rc1)
linux-mako
Launchpad, Ubuntu, Debian
artful Does not exist

cosmic Does not exist

trusty Does not exist
(trusty was ignored [abandoned])
xenial Ignored
(abandoned)
bionic Does not exist

upstream
Released (4.11~rc1)
linux-manta
Launchpad, Ubuntu, Debian
trusty Does not exist
(trusty was ignored [abandoned])
xenial Does not exist

artful Does not exist

bionic Does not exist

cosmic Does not exist

upstream
Released (4.11~rc1)
linux-hwe
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Not vulnerable
(4.18.0-13.14~18.04.1)
cosmic Does not exist

trusty Does not exist

upstream
Released (4.11~rc1)
xenial
Released (4.8.0-54.57~16.04.1)
linux-hwe-edge
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Not vulnerable
(4.18.0-13.14~18.04.1)
cosmic Does not exist

trusty Does not exist

upstream
Released (4.11~rc1)
xenial
Released (4.8.0-54.57~16.04.1)
linux-kvm
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Not vulnerable
(4.15.0-1002.2)
cosmic Not vulnerable
(4.15.0-1008.8)
trusty Does not exist

upstream
Released (4.11~rc1)
xenial Not vulnerable
(4.4.0-1004.9)
linux-lts-utopic
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

trusty Does not exist
(trusty was ignored [end of standard support])
upstream
Released (4.11~rc1)
xenial Does not exist

linux-lts-vivid
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

trusty Ignored
(end of life, was needs-triage)
upstream
Released (4.11~rc1)
xenial Does not exist

linux-lts-wily
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

trusty Does not exist
(trusty was ignored [end of standard support])
upstream
Released (4.11~rc1)
xenial Does not exist

linux-lts-xenial
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

trusty
Released (4.4.0-87.110~14.04.1)
upstream
Released (4.11~rc1)
xenial Does not exist

linux-oem
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Not vulnerable
(4.15.0-1002.3)
cosmic Not vulnerable
(4.15.0-1004.5)
trusty Does not exist

upstream
Released (4.11~rc1)
xenial Not vulnerable
(4.13.0-1008.9)
linux-qcm-msm
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

trusty Does not exist

upstream
Released (4.11~rc1)
xenial Does not exist

linux-raspi2
Launchpad, Ubuntu, Debian
artful Not vulnerable
(4.10.0-1004.6)
bionic Not vulnerable
(4.13.0-1005.5)
cosmic Not vulnerable
(4.15.0-1010.11)
trusty Does not exist

upstream
Released (4.11~rc1)
xenial
Released (4.4.0-1065.73)
linux-snapdragon
Launchpad, Ubuntu, Debian
artful Not vulnerable
(4.4.0-1067.72)
bionic Not vulnerable

cosmic Does not exist

trusty Does not exist

upstream
Released (4.11~rc1)
xenial
Released (4.4.0-1067.72)
linux-ti-omap4
Launchpad, Ubuntu, Debian
artful Does not exist

bionic Does not exist

cosmic Does not exist

trusty Does not exist

upstream
Released (4.11~rc1)
xenial Does not exist

Severity score breakdown

Parameter Value
Base score 6.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H