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Ubuntu 16.04 LTS : Linux kernel vulnerabilities (USN-4346-1)

high Nessus Plugin ID 136089

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Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 16.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-4346-1 advisory.

 - drivers/scsi/qla2xxx/qla_os.c in the Linux kernel 5.2.14 does not check the alloc_workqueue return value, leading to a NULL pointer dereference. (CVE-2019-16233)

 - drivers/net/wireless/intel/iwlwifi/pcie/trans.c in the Linux kernel 5.2.14 does not check the alloc_workqueue return value, leading to a NULL pointer dereference. (CVE-2019-16234)

 - In the Linux kernel 5.4.0-rc2, there is a use-after-free (read) in the __blk_add_trace function in kernel/trace/blktrace.c (which is used to fill out a blk_io_trace structure and place it in a per-cpu sub- buffer). (CVE-2019-19768)

 - There is a use-after-free vulnerability in the Linux kernel through 5.5.2 in the n_tty_receive_buf_common function in drivers/tty/n_tty.c. (CVE-2020-8648)

 - An issue was discovered in the Linux kernel 3.16 through 5.5.6. set_fdc in drivers/block/floppy.c leads to a wait_til_ready out-of-bounds read because the FDC index is not checked for errors before assigning it, aka CID-2e90ca68b0d2. (CVE-2020-9383)

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

Solution

Update the affected kernel package.

See Also

https://ubuntu.com/security/notices/USN-4346-1

Plugin Details

Severity: High

ID: 136089

File Name: ubuntu_USN-4346-1.nasl

Version: 1.7

Type: local

Agent: unix

Published: 4/29/2020

Updated: 1/9/2024

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: Low

Base Score: 3.6

Temporal Score: 2.8

Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:P

CVSS Score Source: CVE-2020-9383

CVSS v3

Risk Factor: High

Base Score: 7.1

Temporal Score: 6.4

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

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1070-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1106-aws, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1132-raspi2, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1136-snapdragon, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-178-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-178-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-178-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-178-powerpc-e500mc, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-178-powerpc-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-178-powerpc64-emb, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-178-powerpc64-smp, cpe:/o:canonical:ubuntu_linux:16.04:-:lts

Required KB Items: Host/cpu, Host/Debian/dpkg-l, Host/Ubuntu, Host/Ubuntu/release

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 4/29/2020

Vulnerability Publication Date: 9/11/2019

Reference Information

CVE: CVE-2019-16233, CVE-2019-16234, CVE-2019-19768, CVE-2020-8648, CVE-2020-9383

USN: 4346-1