RHEL 7 : kernel-alt (RHSA-2020:2104)

high Nessus Plugin ID 136496
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 Red Hat host is missing one or more security updates.

Description

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:2104 advisory.

- kernel: out of bounds write in function i2c_smbus_xfer_emulated in drivers/i2c/i2c-core-smbus.c (CVE-2017-18551)

- kernel: double free may be caused by the function allocate_trace_buffer in the file kernel/trace/trace.c (CVE-2017-18595)

- kernel: null pointer dereference in dlpar_parse_cc_property in arch/powerrc/platforms/pseries/dlpar.c causing denial of service (CVE-2019-12614)

- kernel: denial of service in in xfs_setattr_nonsize in fs/xfs/xfs_iops.c (CVE-2019-15538)

- kernel: mounting a crafted ext4 filesystem image, performing some operations, and unmounting can lead to a use-after-free in ext4_put_super in fs/ext4/super.c (CVE-2019-19447)

- kernel: a malicious USB device in the drivers/input/ff-memless.c leads to use-after-free (CVE-2019-19524)

- kernel: use-after-free in __blk_add_trace in kernel/trace/blktrace.c (CVE-2019-19768)

- kernel: out of bounds write in i2c driver leads to local escalation of privilege (CVE-2019-9454)

- Kernel: NetLabel: null pointer dereference while receiving CIPSO packet with null category may cause kernel panic (CVE-2020-10711)

- kernel: out-of-bounds read in set_fdc in drivers/block/floppy.c (CVE-2020-9383)

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://cwe.mitre.org/data/definitions/119.html

https://cwe.mitre.org/data/definitions/125.html

https://cwe.mitre.org/data/definitions/400.html

https://cwe.mitre.org/data/definitions/416.html

https://cwe.mitre.org/data/definitions/476.html

https://cwe.mitre.org/data/definitions/787.html

https://access.redhat.com/security/cve/CVE-2017-18551

https://access.redhat.com/security/cve/CVE-2017-18595

https://access.redhat.com/security/cve/CVE-2019-9454

https://access.redhat.com/security/cve/CVE-2019-12614

https://access.redhat.com/security/cve/CVE-2019-15538

https://access.redhat.com/security/cve/CVE-2019-19447

https://access.redhat.com/security/cve/CVE-2019-19524

https://access.redhat.com/security/cve/CVE-2019-19768

https://access.redhat.com/security/cve/CVE-2020-9383

https://access.redhat.com/security/cve/CVE-2020-10711

https://access.redhat.com/errata/RHSA-2020:2104

https://bugzilla.redhat.com/1718176

https://bugzilla.redhat.com/1746777

https://bugzilla.redhat.com/1757368

https://bugzilla.redhat.com/1758671

https://bugzilla.redhat.com/1781679

https://bugzilla.redhat.com/1783459

https://bugzilla.redhat.com/1786164

https://bugzilla.redhat.com/1810685

https://bugzilla.redhat.com/1818818

https://bugzilla.redhat.com/1825116

Plugin Details

Severity: High

ID: 136496

File Name: redhat-RHSA-2020-2104.nasl

Version: 1.5

Type: local

Agent: unix

Published: 5/12/2020

Updated: 7/21/2021

Dependencies: ssh_get_info.nasl, redhat_repos.nasl, linux_alt_patch_detect.nasl

Risk Information

CVSS Score Source: CVE-2017-18595

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

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

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

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

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

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:kernel, p-cpe:/a:redhat:enterprise_linux:kernel-abi-whitelists, p-cpe:/a:redhat:enterprise_linux:kernel-bootwrapper, p-cpe:/a:redhat:enterprise_linux:kernel-debug, p-cpe:/a:redhat:enterprise_linux:kernel-debug-devel, p-cpe:/a:redhat:enterprise_linux:kernel-devel, p-cpe:/a:redhat:enterprise_linux:kernel-headers, p-cpe:/a:redhat:enterprise_linux:kernel-kdump, p-cpe:/a:redhat:enterprise_linux:kernel-kdump-devel, p-cpe:/a:redhat:enterprise_linux:kernel-tools, p-cpe:/a:redhat:enterprise_linux:kernel-tools-libs, p-cpe:/a:redhat:enterprise_linux:kernel-tools-libs-devel, p-cpe:/a:redhat:enterprise_linux:perf, p-cpe:/a:redhat:enterprise_linux:python-perf

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

Exploit Ease: No known exploits are available

Patch Publication Date: 5/12/2020

Vulnerability Publication Date: 5/30/2019

Reference Information

CVE: CVE-2017-18551, CVE-2017-18595, CVE-2019-9454, CVE-2019-12614, CVE-2019-15538, CVE-2019-19447, CVE-2019-19524, CVE-2019-19768, CVE-2020-9383, CVE-2020-10711

BID: 108550

RHSA: 2020:2104

CWE: 119, 125, 400, 416, 476, 787