Amazon Linux 2 : kernel (ALAS-2019-1179)

high Nessus Plugin ID 123466
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VPR Score: 5.1

Synopsis

The remote Amazon Linux 2 host is missing a security update.

Description

A kernel memory leak was found in the kernel_read_file() function in the fs/exec.c file in the Linux kernel. An attacker could use this flaw to cause a memory leak and thus a denial of service (DoS).(CVE-2019-8980)

A flaw was found in mmap in the Linux kernel allowing the process to map a null page. This allows attackers to abuse this mechanism to turn NULL pointer dereferences into workable exploits.(CVE-2019-9213)

Solution

Run 'yum update kernel' to update your system.

See Also

https://alas.aws.amazon.com/AL2/ALAS-2019-1179.html

Plugin Details

Severity: High

ID: 123466

File Name: al2_ALAS-2019-1179.nasl

Version: 1.4

Type: local

Agent: unix

Published: 3/29/2019

Updated: 1/27/2020

Dependencies: ssh_get_info.nasl

Risk Information

Risk Factor: High

VPR Score: 5.1

CVSS v2.0

Base Score: 7.8

Temporal Score: 6.4

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

Temporal Vector: CVSS2#E:F/RL:OF/RC:C

CVSS v3.0

Base Score: 7.5

Temporal Score: 7

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

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

Vulnerability Information

CPE: cpe:2.3:o:amazon:linux:2:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:kernel:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:kernel-debuginfo:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:kernel-debuginfo-common-x86_64:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:kernel-devel:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:kernel-headers:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:kernel-tools:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:kernel-tools-debuginfo:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:kernel-tools-devel:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:perf:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:perf-debuginfo:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:python-perf:*:*:*:*:*:*:*, p-cpe:2.3:a:amazon:linux:python-perf-debuginfo:*:*:*:*:*:*:*

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 3/28/2019

Vulnerability Publication Date: 2/21/2019

Exploitable With

Metasploit (Reliable Datagram Sockets (RDS) rds_atomic_free_op NULL pointer dereference Privilege Escalation)

Reference Information

CVE: CVE-2019-8980, CVE-2019-9213

ALAS: 2019-1179