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Ubuntu 16.04 LTS : Linux kernel vulnerabilities (USN-4579-1)

high Nessus Plugin ID 141447

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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-4579-1 advisory.

 - The xfs_dinode_verify function in fs/xfs/libxfs/xfs_inode_buf.c in the Linux kernel through 4.16.3 allows local users to cause a denial of service (xfs_ilock_attr_map_shared invalid pointer dereference) via a crafted xfs image. (CVE-2018-10322)

 - A memory out-of-bounds read flaw was found in the Linux kernel before 5.9-rc2 with the ext3/ext4 file system, in the way it accesses a directory with broken indexing. This flaw allows a local user to crash the system if the directory exists. The highest threat from this vulnerability is to system availability.
 (CVE-2020-14314)

 - Use-after-free vulnerability in the Linux kernel exploitable by a local attacker due to reuse of a DCCP socket with an attached dccps_hc_tx_ccid object as a listener after being released. Fixed in Ubuntu Linux kernel 5.4.0-51.56, 5.3.0-68.63, 4.15.0-121.123, 4.4.0-193.224, 3.13.0.182.191 and 3.2.0-149.196.
 (CVE-2020-16119)

 - A race condition between hugetlb sysctl handlers in mm/hugetlb.c in the Linux kernel before 5.8.8 could be used by local attackers to corrupt memory, cause a NULL pointer dereference, or possibly have unspecified other impact, aka CID-17743798d812. (CVE-2020-25285)

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-4579-1

Plugin Details

Severity: High

ID: 141447

File Name: ubuntu_USN-4579-1.nasl

Version: 1.7

Type: local

Agent: unix

Published: 10/14/2020

Updated: 1/9/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.6

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

CVSS Score Source: CVE-2020-16119

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

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

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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1082-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1117-aws, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1141-raspi2, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-1145-snapdragon, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-193-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-193-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-193-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-193-powerpc-e500mc, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-193-powerpc-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-193-powerpc64-emb, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-193-powerpc64-smp

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/14/2020

Vulnerability Publication Date: 4/24/2018

Reference Information

CVE: CVE-2018-10322, CVE-2020-14314, CVE-2020-16119, CVE-2020-25285

BID: 103960

USN: 4579-1