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Ubuntu 16.04 ESM / 18.04 LTS : Linux kernel vulnerabilities (USN-5466-1)

high Nessus Plugin ID 161954

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Synopsis

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

Description

The remote Ubuntu 16.04 ESM / 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5466-1 advisory.

 - A flaw was found in the Linux SCTP stack. A blind attacker may be able to kill an existing SCTP association through invalid chunks if the attacker knows the IP-addresses and port numbers being used and the attacker can send packets with spoofed IP addresses. (CVE-2021-3772)

 - A vulnerability was found in btrfs_alloc_tree_b in fs/btrfs/extent-tree.c in the Linux kernel due to an improper lock operation in btrfs. In this flaw, a user with a local privilege may cause a denial of service (DOS) due to a deadlock problem. (CVE-2021-4149)

 - A flaw was found in the Linux kernel in net/netfilter/nf_tables_core.c:nft_do_chain, which can cause a use-after-free. This issue needs to handle 'return' with proper preconditions, as it can lead to a kernel information leak problem caused by a local, unprivileged attacker. (CVE-2022-1016)

 - The root cause of this vulnerability is that the ioctl$DRM_IOCTL_MODE_DESTROY_DUMB can decrease refcount of *drm_vgem_gem_object *(created in *vgem_gem_dumb_create*) concurrently, and *vgem_gem_dumb_create *will access the freed drm_vgem_gem_object. (CVE-2022-1419)

 - KGDB and KDB allow read and write access to kernel memory, and thus should be restricted during lockdown.
 An attacker with access to a serial port could trigger the debugger so it is important that the debugger respect the lockdown mode when/if it is triggered. (CVE-2022-21499)

 - In the Linux kernel before 5.17.1, a refcount leak bug was found in net/llc/af_llc.c. (CVE-2022-28356)

 - ems_usb_start_xmit in drivers/net/can/usb/ems_usb.c in the Linux kernel through 5.17.1 has a double free.
 (CVE-2022-28390)

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-5466-1

Plugin Details

Severity: High

ID: 161954

File Name: ubuntu_USN-5466-1.nasl

Version: 1.7

Type: local

Agent: unix

Published: 6/8/2022

Updated: 1/9/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.5

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

CVSS Score Source: CVE-2021-3772

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-2022-28390

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:16.04:-:esm, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1098-oracle, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1114-raspi2, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1119-kvm, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1127-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1132-snapdragon, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1133-aws, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1133-aws-hwe, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1142-azure, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-184-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-184-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-184-lowlatency

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/8/2022

Vulnerability Publication Date: 12/8/2021

Reference Information

CVE: CVE-2021-3772, CVE-2021-4149, CVE-2022-1016, CVE-2022-1419, CVE-2022-21499, CVE-2022-28356, CVE-2022-28390

USN: 5466-1