Detections
Analytics
Amazon Linux 2 : kernel (ALAS-2023-2027)
high Nessus Plugin ID 175018
Language:
Synopsis
The remote Amazon Linux 2 host is missing a security update.Description
The version of kernel installed on the remote host is prior to 4.14.313-235.533. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2023-2027 advisory.- cbq_classify in net/sched/sch_cbq.c in the Linux kernel through 6.1.4 allows attackers to cause a denial of service (slab-out-of-bounds read) because of type confusion (non-negative numbers can sometimes indicate a TC_ACT_SHOT condition rather than valid classification results). (CVE-2023-23454)
- An out-of-bounds memory access flaw was found in the Linux kernel's XFS file system in how a user restores an XFS image after failure (with a dirty log journal). This flaw allows a local user to crash or potentially escalate their privileges on the system. (CVE-2023-2124) (CVE-2023-2124)
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Run 'yum update kernel' to update your system.See Also
https://alas.aws.amazon.com/AL2/ALAS-2023-2027.html
https://alas.aws.amazon.com/faqs.html
https://alas.aws.amazon.com/cve/html/CVE-2023-1838.html
https://alas.aws.amazon.com/cve/html/CVE-2023-2002.html
https://alas.aws.amazon.com/cve/html/CVE-2023-2124.html
https://alas.aws.amazon.com/cve/html/CVE-2023-2194.html
Plugin Details
Severity: High
ID: 175018
File Name: al2_ALAS-2023-2027.nasl
Version: 1.5
Type: local
Agent: unix
Published: 5/2/2023
Updated: 8/14/2023
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.7
CVSS v2
Risk Factor: Medium
Base Score: 6.8
Temporal Score: 5.3
Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C
CVSS Score Source: CVE-2023-2124
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: p-cpe:/a:amazon:linux:kernel, p-cpe:/a:amazon:linux:kernel-debuginfo, p-cpe:/a:amazon:linux:kernel-debuginfo-common-aarch64, p-cpe:/a:amazon:linux:kernel-debuginfo-common-x86_64, p-cpe:/a:amazon:linux:kernel-devel, p-cpe:/a:amazon:linux:kernel-headers, p-cpe:/a:amazon:linux:kernel-livepatch-4.14.313-235.533, p-cpe:/a:amazon:linux:kernel-tools, p-cpe:/a:amazon:linux:kernel-tools-debuginfo, p-cpe:/a:amazon:linux:kernel-tools-devel, p-cpe:/a:amazon:linux:perf, p-cpe:/a:amazon:linux:perf-debuginfo, p-cpe:/a:amazon:linux:python-perf, p-cpe:/a:amazon:linux:python-perf-debuginfo, cpe:/o:amazon:linux:2
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: 4/27/2023
Vulnerability Publication Date: 1/10/2023
Reference Information
CVE: CVE-2023-1838, CVE-2023-2002, CVE-2023-2124, CVE-2023-2194, CVE-2023-23454, CVE-2023-33203