SUSE SLES12 Security Update : kernel (SUSE-SU-2019:0709-1)
high Nessus Plugin ID 123066
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Synopsis
The remote SUSE host is missing one or more security updates.Description
This update for the Linux Kernel 4.4.121-92_98 fixes several issues.The following security issues were fixed :
CVE-2019-9213: Expand_downwards in mm/mmap.c lacked a check for the mmap minimum address, which made it easier for attackers to exploit kernel NULL pointer dereferences on non-SMAP platforms. This is related to a capability check for the wrong task (bsc#1128378).
CVE-2019-7221: Fixed a user-after-free vulnerability in the KVM hypervisor related to the emulation of a preemption timer, allowing an guest user/process to crash the host kernel. (bsc#1124734).
CVE-2019-6974: kvm_ioctl_create_device in virt/kvm/kvm_main.c mishandled reference counting because of a race condition, leading to a use-after-free (bsc#1124729).
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 Server for SAP 12-SP2:zypper in -t patch SUSE-SLE-SAP-12-SP2-2019-709=1 SUSE-SLE-SAP-12-SP2-2019-710=1
SUSE Linux Enterprise Server 12-SP2-LTSS:zypper in -t patch SUSE-SLE-SERVER-12-SP2-2019-709=1 SUSE-SLE-SERVER-12-SP2-2019-710=1
See Also
https://bugzilla.suse.com/show_bug.cgi?id=1124729
https://bugzilla.suse.com/show_bug.cgi?id=1124734
https://bugzilla.suse.com/show_bug.cgi?id=1128378
https://www.suse.com/security/cve/CVE-2019-6974/
https://www.suse.com/security/cve/CVE-2019-7221/
Plugin Details
Severity: High
ID: 123066
File Name: suse_SU-2019-0709-1.nasl
Version: 1.6
Type: local
Agent: unix
Family: SuSE Local Security Checks
Published: 3/25/2019
Updated: 1/13/2021
Supported Sensors: Nessus Agent
Risk Information
VPR
Risk Factor: Medium
Score: 6.7
CVSS v2
Risk Factor: Medium
Base Score: 6.8
Temporal Score: 5.6
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P
Temporal Vector: E:F/RL:OF/RC:C
CVSS v3
Risk Factor: High
Base Score: 8.1
Temporal Score: 7.5
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: E:F/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_121-92_92-default, p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_121-92_98-default, cpe:/o:novell:suse_linux:12
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: 3/22/2019
Vulnerability Publication Date: 2/15/2019
Exploitable With
Metasploit (Reliable Datagram Sockets (RDS) rds_atomic_free_op NULL pointer dereference Privilege Escalation)