Detections
Analytics
Amazon Linux 2 : kernel (ALASKERNEL-5.10-2023-039)
high Nessus Plugin ID 180566
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 5.10.192-182.736. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.10-2023-039 advisory.- A division-by-zero error on some AMD processors can potentially return speculative data resulting in loss of confidentiality. (CVE-2023-20588)
- A use-after-free vulnerability was found in the Linux kernel's netfilter subsystem in net/netfilter/nf_tables_api.c. Mishandled error handling with NFT_MSG_NEWRULE makes it possible to use a dangling pointer in the same transaction causing a use-after-free vulnerability. This flaw allows a local attacker with user access to cause a privilege escalation issue. We recommend upgrading past commit 1240eb93f0616b21c675416516ff3d74798fdc97. (CVE-2023-3390)
- A use-after-free flaw was found in the Linux kernel's netfilter in the way a user triggers the nft_pipapo_remove function with the element, without a NFT_SET_EXT_KEY_END. This issue could allow a local user to crash the system or potentially escalate their privileges on the system. (CVE-2023-4004)
- A use-after-free flaw was found in net/sched/cls_fw.c in classifiers (cls_fw, cls_u32, and cls_route) in the Linux Kernel. This flaw allows a local attacker to perform a local privilege escalation due to incorrect handling of the existing filter, leading to a kernel information leak issue. (CVE-2023-4128)
- A use-after-free flaw was found in the Linux kernel's Netfilter functionality when adding a rule with NFTA_RULE_CHAIN_ID. This flaw allows a local user to crash or escalate their privileges on the system.
(CVE-2023-4147)
- A flaw was found in the exFAT driver of the Linux kernel. The vulnerability exists in the implementation of the file name reconstruction function, which is responsible for reading file name entries from a directory index and merging file name parts belonging to one file into a single long file name. Since the file name characters are copied into a stack variable, a local privileged attacker could use this flaw to overflow the kernel stack. (CVE-2023-4273)
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/ALASKERNEL-5.10-2023-039.html
https://alas.aws.amazon.com/faqs.html
https://alas.aws.amazon.com/cve/html/CVE-2023-3390.html
https://alas.aws.amazon.com/cve/html/CVE-2023-34319.html
https://alas.aws.amazon.com/cve/html/CVE-2023-3777.html
https://alas.aws.amazon.com/cve/html/CVE-2023-39194.html
https://alas.aws.amazon.com/cve/html/CVE-2023-4004.html
https://alas.aws.amazon.com/cve/html/CVE-2023-4015.html
https://alas.aws.amazon.com/cve/html/CVE-2023-4128.html
https://alas.aws.amazon.com/cve/html/CVE-2023-4147.html
https://alas.aws.amazon.com/cve/html/CVE-2023-4206.html
https://alas.aws.amazon.com/cve/html/CVE-2023-4207.html
https://alas.aws.amazon.com/cve/html/CVE-2023-4208.html
https://alas.aws.amazon.com/cve/html/CVE-2023-4273.html
Plugin Details
Severity: High
ID: 180566
File Name: al2_ALASKERNEL-5_10-2023-039.nasl
Version: 1.5
Type: local
Agent: unix
Published: 9/6/2023
Updated: 12/5/2023
Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Nessus Agent
Risk Information
VPR
Risk Factor: High
Score: 8.4
CVSS v2
Risk Factor: High
Base Score: 7.8
Temporal Score: 6.1
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:N/A:N
CVSS Score Source: CVE-2023-20588
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
CVSS Score Source: CVE-2023-4622
Vulnerability Information
CPE: p-cpe:/a:amazon:linux:bpftool, p-cpe:/a:amazon:linux:bpftool-debuginfo, 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-5.10.192-182.736, 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: 8/31/2023
Vulnerability Publication Date: 6/28/2023
Reference Information
CVE: CVE-2023-20588, CVE-2023-3390, CVE-2023-34319, CVE-2023-3777, CVE-2023-39194, CVE-2023-4004, CVE-2023-4015, CVE-2023-4128, CVE-2023-4147, CVE-2023-4206, CVE-2023-4207, CVE-2023-4208, CVE-2023-4273, CVE-2023-4622