The remote Ubuntu 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5623-1 advisory.

    Asaf Modelevsky discovered that the Intel(R) 10GbE PCI Express (ixgbe) Ethernet driver for the Linux     kernel performed insufficient control flow management. A local attacker could possibly use this to cause a     denial of service. (CVE-2021-33061)

    It was discovered that the framebuffer driver on the Linux kernel did not verify size limits when changing     font or screen size, leading to an out-of- bounds write. A local attacker could use this to cause a denial     of service (system crash) or possibly execute arbitrary code. (CVE-2021-33655)

    Moshe Kol, Amit Klein and Yossi Gilad discovered that the IP implementation in the Linux kernel did not     provide sufficient randomization when calculating port offsets. An attacker could possibly use this to     expose sensitive information. (CVE-2022-1012, CVE-2022-32296)

    Norbert Slusarek discovered that a race condition existed in the perf subsystem in the Linux kernel,     resulting in a use-after-free vulnerability. A privileged local attacker could use this to cause a denial     of service (system crash) or possibly execute arbitrary code. (CVE-2022-1729)

    Qiuhao Li, Gaoning Pan, and Yongkang Jia discovered that the KVM hypervisor implementation in the Linux     kernel did not properly handle an illegal instruction in a guest, resulting in a null pointer dereference.
    An attacker in a guest VM could use this to cause a denial of service (system crash) in the host OS.
    (CVE-2022-1852)

    It was discovered that the UDF file system implementation in the Linux kernel contained an out-of-bounds     write vulnerability. A local attacker could use this to cause a denial of service (system crash) or     possibly execute arbitrary code. (CVE-2022-1943)

    Gerald Lee discovered that the NTFS file system implementation in the Linux kernel did not properly handle     certain error conditions, leading to a use- after-free vulnerability. A local attacker could use this to     cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2022-1973)

    Duoming Zhou discovered that race conditions existed in the timer handling implementation of the Linux     kernel's Rose X.25 protocol layer, resulting in use-after-free vulnerabilities. A local attacker could use     this to cause a denial of service (system crash). (CVE-2022-2318)

    It was discovered that the device-mapper verity (dm-verity) driver in the Linux kernel did not properly     verify targets being loaded into the device- mapper table. A privileged attacker could use this to cause a     denial of service (system crash) or possibly execute arbitrary code. (CVE-2022-2503)

    Roger Pau Monn discovered that the Xen virtual block driver in the Linux kernel did not properly     initialize memory pages to be used for shared communication with the backend. A local attacker could use     this to expose sensitive information (guest kernel memory). (CVE-2022-26365)

    Zheyu Ma discovered that the Intel iSMT SMBus host controller driver in the Linux kernel contained an out-     of-bounds write vulnerability. A local attacker could use this to cause a denial of service (system     crash). (CVE-2022-2873)

    Selim Enes Karaduman discovered that a race condition existed in the pipe buffers implementation of the     Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly     escalate privileges. (CVE-2022-2959)

    Roger Pau Monn discovered that the Xen paravirtualization frontend in the Linux kernel did not properly     initialize memory pages to be used for shared communication with the backend. A local attacker could use     this to expose sensitive information (guest kernel memory). (CVE-2022-33740)

    It was discovered that the Xen paravirtualization frontend in the Linux kernel incorrectly shared     unrelated data when communicating with certain backends. A local attacker could use this to cause a denial     of service (guest crash) or expose sensitive information (guest kernel memory). (CVE-2022-33741,     CVE-2022-33742)

    Jan Beulich discovered that the Xen network device frontend driver in the Linux kernel incorrectly handled     socket buffers (skb) references when communicating with certain backends. A local attacker could use this     to cause a denial of service (guest crash). (CVE-2022-33743)

    Oleksandr Tyshchenko discovered that the Xen paravirtualization platform in the Linux kernel on ARM     platforms contained a race condition in certain situations. An attacker in a guest VM could use this to     cause a denial of service in the host OS. (CVE-2022-33744)

    It was discovered that the virtio RPMSG bus driver in the Linux kernel contained a double-free     vulnerability in certain error conditions. A local attacker could possibly use this to cause a denial of     service (system crash). (CVE-2022-34494, CVE-2022-34495)

    Domingo Dirutigliano and Nicola Guerrera discovered that the netfilter subsystem in the Linux kernel did     not properly handle rules that truncated packets below the packet header size. When such rules are in     place, a remote attacker could possibly use this to cause a denial of service (system crash).
    (CVE-2022-36946)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Detections

Analytics

Ubuntu 20.04 LTS : Linux kernel (HWE) vulnerabilities (USN-5623-1)

high Nessus Plugin ID 165280

Version 1.9

Version 1.8

Version 1.7

Version 1.6

Version 1.5

Version 1.4

Version 1.3

Version 1.9 Aug 28, 2024, 11:02 PM CVSS metrics ("Cvssv4 score" set to 0.0) CVSSv2 severity (based on None, severity decreased from "High" to "Low") Detection (updated detection logic) Plugin metadata Plugin Feed: 202408282302
Version 1.8 Jan 10, 2024, 8:45 AM Detection (updated detection logic) Plugin metadata Plugin Feed: 202401100845
Version 1.7 Oct 21, 2023, 3:09 AM Detection Plugin metadata Plugin Feed: 202310210309
Version 1.6 Oct 11, 2023, 4:17 PM Exploit attributes ("Exploit available" set to "True". "Exploitability ease" changed from "No known exploits are available" to "Exploits are available") CVSS temporal metrics ("CVSSv2 temporal vector" set to "CVSS2#E:POC/RL:OF/RC:C". "CVSSv3 temporal vector" set to "CVSS:3.0/E:P/RL:O/RC:C") Plugin Feed: 202310111617
Version 1.5 Jan 18, 2023, 9:01 AM Logic Changes (Added support for s390x) Plugin Feed: 202301180901
Version 1.4 Nov 8, 2022, 3:50 PM CVSS metrics CVSSv2 score source (Changed from CVE-2022-33743 to CVE-2022-1943) CVSSv2 severity (Based on CVE-2022-1943 severity increased from Medium to High) Plugin Feed: 202211081550
Version 1.3 Oct 3, 2022, 3:58 PM CVSS metrics Plugin Feed: 202210031558