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Ubuntu 22.04 LTS / 23.10 : Linux kernel vulnerabilities (USN-6503-1)

high Nessus Plugin ID 186080

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Synopsis

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

Description

The remote Ubuntu 22.04 LTS / 23.10 host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6503-1 advisory.

 - An issue was discovered in drivers/mtd/ubi/cdev.c in the Linux kernel 6.2. There is a divide-by-zero error in do_div(sz,mtd->erasesize), used indirectly by ctrl_cdev_ioctl, when mtd->erasesize is 0.
 (CVE-2023-31085)

 - A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. Due to a race condition between nf_tables netlink control plane transaction and nft_set element garbage collection, it is possible to underflow the reference counter causing a use-after-free vulnerability. We recommend upgrading past commit 3e91b0ebd994635df2346353322ac51ce84ce6d8. (CVE-2023-4244)

 - A flaw was found in KVM. An improper check in svm_set_x2apic_msr_interception() may allow direct access to host x2apic msrs when the guest resets its apic, potentially leading to a denial of service condition.
 (CVE-2023-5090)

 - A use-after-free vulnerability in the Linux kernel's fs/smb/client component can be exploited to achieve local privilege escalation. In case of an error in smb3_fs_context_parse_param, ctx->password was freed but the field was not set to NULL which could lead to double free. We recommend upgrading past commit e6e43b8aa7cd3c3af686caf0c2e11819a886d705. (CVE-2023-5345)

 - The reference count changes made as part of the CVE-2023-33951 and CVE-2023-33952 fixes exposed a use- after-free flaw in the way memory objects were handled when they were being used to store a surface. When running inside a VMware guest with 3D acceleration enabled, a local, unprivileged user could potentially use this flaw to escalate their privileges. (CVE-2023-5633)

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-6503-1

Plugin Details

Severity: High

ID: 186080

File Name: ubuntu_USN-6503-1.nasl

Version: 1.3

Type: local

Agent: unix

Published: 11/21/2023

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: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2023-5633

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

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:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:22.04:-:lts, cpe:/o:canonical:ubuntu_linux:23.10, p-cpe:/a:canonical:ubuntu_linux:linux-image-6.5.0-1004-starfive, p-cpe:/a:canonical:ubuntu_linux:linux-image-6.5.0-1006-laptop, p-cpe:/a:canonical:ubuntu_linux:linux-image-6.5.0-1007-raspi, p-cpe:/a:canonical:ubuntu_linux:linux-image-6.5.0-1008-oem, p-cpe:/a:canonical:ubuntu_linux:linux-image-6.5.0-1010-aws, p-cpe:/a:canonical:ubuntu_linux:linux-image-6.5.0-1012-oracle, p-cpe:/a:canonical:ubuntu_linux:linux-image-6.5.0-13-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-6.5.0-13-lowlatency-64k

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

Exploit Ease: No known exploits are available

Patch Publication Date: 11/21/2023

Vulnerability Publication Date: 4/24/2023

Reference Information

CVE: CVE-2023-31085, CVE-2023-4244, CVE-2023-5090, CVE-2023-5345, CVE-2023-5633

USN: 6503-1