Ubuntu 20.04 LTS / 22.04 LTS : Linux kernel vulnerabilities (USN-6704-1)

high Nessus Plugin ID 192312

Synopsis

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

Description

The remote Ubuntu 20.04 LTS / 22.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6704-1 advisory.

- In the Linux kernel before 5.17, drivers/phy/tegra/xusb.c mishandles the tegra_xusb_find_port_node return value. Callers expect NULL in the error case, but an error pointer is used. (CVE-2023-23000)

- A flaw was found in the Linux kernel's ksmbd, a high-performance in-kernel SMB server. The specific flaw exists within the handling of SMB2_SESSION_SETUP commands. The issue results from the lack of control of resource consumption. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. (CVE-2023-32247)

- A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. The nft_setelem_catchall_deactivate() function checks whether the catch-all set element is active in the current generation instead of the next generation before freeing it, but only flags it inactive in the next generation, making it possible to free the element multiple times, leading to a double free vulnerability. We recommend upgrading past commit b1db244ffd041a49ecc9618e8feb6b5c1afcdaa7. (CVE-2024-1085)

- A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. The nft_verdict_init() function allows positive values as drop error within the hook verdict, and hence the nf_hook_slow() function can cause a double free vulnerability when NF_DROP is issued with a drop error which resembles NF_ACCEPT. We recommend upgrading past commit f342de4e2f33e0e39165d8639387aa6c19dff660. (CVE-2024-1086)

- A race condition was found in the Linux kernel's scsi device driver in lpfc_unregister_fcf_rescan() function. This can result in a null pointer dereference issue, possibly leading to a kernel panic or denial of service issue. (CVE-2024-24855)

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-6704-1

Plugin Details

Severity: High

ID: 192312

File Name: ubuntu_USN-6704-1.nasl

Version: 1.2

Type: local

Agent: unix

Published: 3/20/2024

Updated: 4/5/2024

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

Risk Information

VPR

Risk Factor: Critical

Score: 9.6

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.9

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

CVSS Score Source: CVE-2024-1086

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7.5

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:H/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-5.15.0-101-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.15.0-1047-nvidia-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.15.0-1053-kvm, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.15.0-101-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.15.0-101-lowlatency-64k, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.15.0-1039-gkeop, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.15.0-1049-ibm, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.15.0-1054-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.15.0-101-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.15.0-1053-gke, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.15.0-1047-nvidia, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.15.0-101-generic-64k, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.15.0-1059-azure-fde, cpe:/o:canonical:ubuntu_linux:20.04:-:lts

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 3/20/2024

Vulnerability Publication Date: 3/1/2023

Reference Information

CVE: CVE-2023-23000, CVE-2023-32247, CVE-2024-1085, CVE-2024-1086, CVE-2024-24855

USN: 6704-1