Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2017-3609)

critical Nessus Plugin ID 102773
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 Oracle Linux host is missing one or more security updates.

Description

The remote Oracle Linux 6 / 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2017-3609 advisory.

- The xen_biovec_phys_mergeable function in drivers/xen/biomerge.c in Xen might allow local OS guest users to corrupt block device data streams and consequently obtain sensitive memory information, cause a denial of service, or gain host OS privileges by leveraging incorrect block IO merge-ability calculation.
(CVE-2017-12134)

- The Linux Kernel imposes a size restriction on the arguments and environmental strings passed through RLIMIT_STACK/RLIM_INFINITY (1/4 of the size), but does not take the argument and environment pointers into account, which allows attackers to bypass this limitation. This affects Linux Kernel versions 4.11.5 and earlier. It appears that this feature was introduced in the Linux Kernel version 2.6.23.
(CVE-2017-1000365)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://linux.oracle.com/errata/ELSA-2017-3609.html

Plugin Details

Severity: Critical

ID: 102773

File Name: oraclelinux_ELSA-2017-3609.nasl

Version: 3.16

Type: local

Agent: unix

Published: 8/25/2017

Updated: 9/8/2021

Dependencies: linux_alt_patch_detect.nasl, ssh_get_info.nasl

Risk Information

CVSS Score Source: CVE-2017-12134

VPR

Risk Factor: Critical

Score: 9.5

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 8.7

Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C

Temporal Vector: E:H/RL:OF/RC:C

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9.4

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: E:H/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:oracle:linux:6, cpe:/o:oracle:linux:7, p-cpe:/a:oracle:linux:dtrace-modules-4.1.12-103.3.8.el6uek, p-cpe:/a:oracle:linux:dtrace-modules-4.1.12-103.3.8.el7uek, p-cpe:/a:oracle:linux:dtrace-modules-provider-headers, p-cpe:/a:oracle:linux:dtrace-modules-shared-headers, p-cpe:/a:oracle:linux:kernel-uek, p-cpe:/a:oracle:linux:kernel-uek-debug, p-cpe:/a:oracle:linux:kernel-uek-debug-devel, p-cpe:/a:oracle:linux:kernel-uek-devel, p-cpe:/a:oracle:linux:kernel-uek-doc, p-cpe:/a:oracle:linux:kernel-uek-firmware

Required KB Items: Host/OracleLinux, Host/RedHat/release, Host/RedHat/rpm-list, Host/local_checks_enabled

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 8/23/2017

Vulnerability Publication Date: 6/19/2017

Exploitable With

Core Impact

Metasploit (AF_PACKET packet_set_ring Privilege Escalation)

Reference Information

CVE: CVE-2016-1575, CVE-2016-1576, CVE-2016-6213, CVE-2016-7910, CVE-2016-8399, CVE-2016-9604, CVE-2016-9644, CVE-2016-10088, CVE-2016-10200, CVE-2016-10208, CVE-2016-10229, CVE-2017-2583, CVE-2017-2636, CVE-2017-2671, CVE-2017-5669, CVE-2017-5986, CVE-2017-6214, CVE-2017-6345, CVE-2017-6347, CVE-2017-7184, CVE-2017-7187, CVE-2017-7273, CVE-2017-7308, CVE-2017-7477, CVE-2017-7533, CVE-2017-7645, CVE-2017-7895, CVE-2017-8797, CVE-2017-8890, CVE-2017-9059, CVE-2017-9074, CVE-2017-9077, CVE-2017-9242, CVE-2017-1000363, CVE-2017-1000364, CVE-2017-1000365, CVE-2017-1000380

IAVB: 2017-B-0108-S

IAVA: 2017-A-0253-S