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-5018-1 advisory.

    It was discovered that the virtual file system implementation in the Linux kernel contained an unsigned to     signed integer conversion error. A local attacker could use this to cause a denial of service (system     crash) or execute arbitrary code. (CVE-2021-33909)

    Piotr Krysiuk discovered that the eBPF implementation in the Linux kernel did not properly enforce limits     for pointer operations. A local attacker could use this to cause a denial of service (system crash) or     possibly execute arbitrary code. (CVE-2021-33200)

    Mathy Vanhoef discovered that the Linux kernels WiFi implementation did not properly clear received     fragments from memory in some situations. A physically proximate attacker could possibly use this issue to     inject packets or expose sensitive information. (CVE-2020-24586)

    Mathy Vanhoef discovered that the Linux kernels WiFi implementation incorrectly handled encrypted     fragments. A physically proximate attacker could possibly use this issue to decrypt fragments.
    (CVE-2020-24587)

    Mathy Vanhoef discovered that the Linux kernels WiFi implementation incorrectly handled EAPOL frames     from unauthenticated senders. A physically proximate attacker could inject malicious packets to cause a     denial of service (system crash). (CVE-2020-26139)

    Mathy Vanhoef discovered that the Linux kernels WiFi implementation could reassemble mixed encrypted     and plaintext fragments. A physically proximate attacker could possibly use this issue to inject packets     or exfiltrate selected fragments. (CVE-2020-26147)

    It was discovered that the bluetooth subsystem in the Linux kernel did not properly perform access     control. An authenticated attacker could possibly use this to expose sensitive information.
    (CVE-2020-26558, CVE-2021-0129)

    Or Cohen and Nadav Markus discovered a use-after-free vulnerability in the nfc implementation in the Linux     kernel. A privileged local attacker could use this issue to cause a denial of service (system crash) or     possibly execute arbitrary code. (CVE-2021-23134)

    Piotr Krysiuk discovered that the eBPF implementation in the Linux kernel did not properly prevent     speculative loads in certain situations. A local attacker could use this to expose sensitive information     (kernel memory). (CVE-2021-31829)

    It was discovered that a race condition in the kernel Bluetooth subsystem could lead to use-after-free of     slab objects. An attacker could use this issue to possibly execute arbitrary code. (CVE-2021-32399)

    It was discovered that a use-after-free existed in the Bluetooth HCI driver of the Linux kernel. A local     attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code.
    (CVE-2021-33034)

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 16.04 ESM / 18.04 LTS : Linux kernel vulnerabilities (USN-5018-1)

high Nessus Plugin ID 151920

Version 1.10

Version 1.9

Version 1.8

Version 1.8

Version 1.7

Version 1.6

Version 1.10 Aug 28, 2024, 7:43 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: 202408281943
Version 1.9 Jan 10, 2024, 8:45 AM Detection (updated detection logic) Plugin metadata Plugin Feed: 202401100845
Version 1.8 Jan 9, 2024, 6:56 PM Detection (updated detection logic) Plugin metadata Plugin Feed: 202401091856
Version 1.8 Dec 7, 2023, 3:25 PM CVSSv2 score source (changed from "CVE-2021-33200" to "CVE-2021-33909") Plugin Feed: 202312071525
Version 1.7 Oct 16, 2023, 7:25 PM Detection Plugin metadata Plugin Feed: 202310161925
Version 1.6 Jan 18, 2023, 9:01 AM Logic Changes (Added support for s390x) Plugin Feed: 202301180901