SUSE SLES12 Security Update : kernel (SUSE-SU-2019:0645-1)
high Nessus Plugin ID 122969
New! Plugin Severity Now Using CVSS v3
The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.
Synopsis
The remote SUSE host is missing one or more security updates.Description
This update for the Linux Kernel 3.12.61-52_125 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-2018-5391: The Linux kernel was vulnerable to a denial of service attack with low rates of specially modified packets targeting IP fragment re-assembly. An attacker might have caused a denial of service condition by sending specially crafted IP fragments. Various vulnerabilities in IP fragmentation have been discovered and fixed over the years. The current vulnerability (CVE-2018-5391) became exploitable in the Linux kernel with the increase of the IP fragment reassembly queue size (bsc#1103098).
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 12-LTSS:zypper in -t patch SUSE-SLE-SERVER-12-2019-645=1 SUSE-SLE-SERVER-12-2019-646=1 SUSE-SLE-SERVER-12-2019-647=1 SUSE-SLE-SERVER-12-2019-648=1 SUSE-SLE-SERVER-12-2019-649=1 SUSE-SLE-SERVER-12-2019-650=1
See Also
https://bugzilla.suse.com/show_bug.cgi?id=1103098
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-2018-5391/
https://www.suse.com/security/cve/CVE-2019-7221/
Plugin Details
Severity: High
ID: 122969
File Name: suse_SU-2019-0645-1.nasl
Version: 1.6
Type: local
Agent: unix
Family: SuSE Local Security Checks
Published: 3/20/2019
Updated: 2/3/2020
Dependencies: ssh_get_info.nasl
Risk Information
CVSS Score Source: CVE-2019-7221
VPR
Risk Factor: Medium
Score: 6.7
CVSS v2
Risk Factor: Medium
Base Score: 4.6
Temporal Score: 3.8
Vector: AV:L/AC:L/Au:N/C:P/I:P/A:P
Temporal Vector: E:F/RL:OF/RC:C
CVSS v3
Risk Factor: High
Base Score: 7.8
Temporal Score: 7.2
Vector: CVSS:3.0/AV:L/AC:L/PR:L/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-3_12_61-52_125-default, p-cpe:/a:novell:suse_linux:kgraft-patch-3_12_61-52_125-xen, p-cpe:/a:novell:suse_linux:kgraft-patch-3_12_61-52_128-default, p-cpe:/a:novell:suse_linux:kgraft-patch-3_12_61-52_128-xen, p-cpe:/a:novell:suse_linux:kgraft-patch-3_12_61-52_133-default, p-cpe:/a:novell:suse_linux:kgraft-patch-3_12_61-52_133-xen, p-cpe:/a:novell:suse_linux:kgraft-patch-3_12_61-52_136-default, p-cpe:/a:novell:suse_linux:kgraft-patch-3_12_61-52_136-xen, p-cpe:/a:novell:suse_linux:kgraft-patch-3_12_61-52_141-default, p-cpe:/a:novell:suse_linux:kgraft-patch-3_12_61-52_141-xen, p-cpe:/a:novell:suse_linux:kgraft-patch-3_12_61-52_146-default, p-cpe:/a:novell:suse_linux:kgraft-patch-3_12_61-52_146-xen, 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: 3/19/2019
Vulnerability Publication Date: 9/6/2018
Exploitable With
Metasploit (Reliable Datagram Sockets (RDS) rds_atomic_free_op NULL pointer dereference Privilege Escalation)