SUSE SLES11 Security Update : kernel (SUSE-SU-2018:1368-1) (Spectre)
high Nessus Plugin ID 110035
Language:
Synopsis
The remote SUSE host is missing one or more security updates.Description
The SUSE Linux Enterprise 11 SP4 kernel was updated to receive various security and bugfixes. The following security bugs were fixed :- CVE-2018-3639: Information leaks using 'Memory Disambiguation' feature in modern CPUs were mitigated, aka 'Spectre Variant 4' (bnc#1087082). A new boot commandline option was introduced, 'spec_store_bypass_disable', which can have following values :
- auto: Kernel detects whether your CPU model contains an implementation of Speculative Store Bypass and picks the most appropriate mitigation.
- on: disable Speculative Store Bypass
- off: enable Speculative Store Bypass
- prctl: Control Speculative Store Bypass per thread via prctl. Speculative Store Bypass is enabled for a process by default. The state of the control is inherited on fork.
- seccomp: Same as 'prctl' above, but all seccomp threads will disable SSB unless they explicitly opt out. The default is 'seccomp', meaning programs need explicit opt-in into the mitigation. Status can be queried via the /sys/devices/system/cpu/vulnerabilities/spec_store_bypas s file, containing :
- 'Vulnerable'
- 'Mitigation: Speculative Store Bypass disabled'
- 'Mitigation: Speculative Store Bypass disabled via prctl'
- 'Mitigation: Speculative Store Bypass disabled via prctl and seccomp'
- CVE-2018-1000199: An address corruption flaw was discovered while modifying a h/w breakpoint via 'modify_user_hw_breakpoint' routine, an unprivileged user/process could use this flaw to crash the system kernel resulting in DoS OR to potentially escalate privileges on a the system. (bsc#1089895)
- CVE-2018-10675: The do_get_mempolicy function in mm/mempolicy.c allowed local users to cause a denial of service (use-after-free) or possibly have unspecified other impact via crafted system calls (bnc#1091755).
- CVE-2017-5715: The retpoline mitigation for Spectre v2 has been enabled also for 32bit x86.
- CVE-2017-5753: Spectre v1 mitigations have been improved by the versions merged from the upstream kernel.
The update package also includes non-security fixes. See advisory for details.
Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
Solution
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or 'zypper patch'.Alternatively you can run the command listed for your product :
SUSE Linux Enterprise Software Development Kit 11-SP4:zypper in -t patch sdksp4-kernel-20180512-13618=1
SUSE Linux Enterprise Server 11-SP4:zypper in -t patch slessp4-kernel-20180512-13618=1
SUSE Linux Enterprise Server 11-EXTRA:zypper in -t patch slexsp3-kernel-20180512-13618=1
SUSE Linux Enterprise Debuginfo 11-SP4:zypper in -t patch dbgsp4-kernel-20180512-13618=1
See Also
https://bugzilla.suse.com/show_bug.cgi?id=1046610
https://bugzilla.suse.com/show_bug.cgi?id=1052943
https://bugzilla.suse.com/show_bug.cgi?id=1068032
https://bugzilla.suse.com/show_bug.cgi?id=1075087
https://bugzilla.suse.com/show_bug.cgi?id=1075088
https://bugzilla.suse.com/show_bug.cgi?id=1080157
https://bugzilla.suse.com/show_bug.cgi?id=1084760
https://bugzilla.suse.com/show_bug.cgi?id=1087082
https://bugzilla.suse.com/show_bug.cgi?id=1087092
https://bugzilla.suse.com/show_bug.cgi?id=1089895
https://bugzilla.suse.com/show_bug.cgi?id=1090630
https://bugzilla.suse.com/show_bug.cgi?id=1090888
https://bugzilla.suse.com/show_bug.cgi?id=1091041
https://bugzilla.suse.com/show_bug.cgi?id=1091671
https://bugzilla.suse.com/show_bug.cgi?id=1091755
https://bugzilla.suse.com/show_bug.cgi?id=1091815
https://bugzilla.suse.com/show_bug.cgi?id=1092372
https://bugzilla.suse.com/show_bug.cgi?id=1092497
https://bugzilla.suse.com/show_bug.cgi?id=1094019
https://www.suse.com/security/cve/CVE-2017-5715/
https://www.suse.com/security/cve/CVE-2017-5753/
https://www.suse.com/security/cve/CVE-2018-1000199/
https://www.suse.com/security/cve/CVE-2018-10675/
Plugin Details
Severity: High
ID: 110035
File Name: suse_SU-2018-1368-1.nasl
Version: 1.12
Type: local
Agent: unix
Family: SuSE Local Security Checks
Published: 5/23/2018
Updated: 1/19/2021
Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent
Risk Information
VPR
Risk Factor: High
Score: 8.4
CVSS v2
Risk Factor: High
Base Score: 7.2
Temporal Score: 6.3
Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C
Temporal Vector: E:H/RL:OF/RC:C
CVSS v3
Risk Factor: High
Base Score: 7.8
Temporal Score: 7.5
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: E:H/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:novell:suse_linux:kernel-default, p-cpe:/a:novell:suse_linux:kernel-default-base, p-cpe:/a:novell:suse_linux:kernel-default-devel, p-cpe:/a:novell:suse_linux:kernel-default-man, p-cpe:/a:novell:suse_linux:kernel-ec2, p-cpe:/a:novell:suse_linux:kernel-ec2-base, p-cpe:/a:novell:suse_linux:kernel-ec2-devel, p-cpe:/a:novell:suse_linux:kernel-pae, p-cpe:/a:novell:suse_linux:kernel-pae-base, p-cpe:/a:novell:suse_linux:kernel-pae-devel, p-cpe:/a:novell:suse_linux:kernel-source, p-cpe:/a:novell:suse_linux:kernel-syms, p-cpe:/a:novell:suse_linux:kernel-trace, p-cpe:/a:novell:suse_linux:kernel-trace-base, p-cpe:/a:novell:suse_linux:kernel-trace-devel, p-cpe:/a:novell:suse_linux:kernel-xen, p-cpe:/a:novell:suse_linux:kernel-xen-base, p-cpe:/a:novell:suse_linux:kernel-xen-devel, cpe:/o:novell:suse_linux:11
Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 5/22/2018
Vulnerability Publication Date: 1/4/2018
Exploitable With
CANVAS (CANVAS)
Reference Information
CVE: CVE-2017-5715, CVE-2017-5753, CVE-2018-1000199, CVE-2018-10675, CVE-2018-3639
IAVA: 2018-A-0020