The version of kernel installed on the remote host is prior to 4.14.248-129.473. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS-2021-1539 advisory.

    2024-03-13: CVE-2021-35477 was added to this advisory.

    A flaw was found in the Linux kernel. When reusing a socket with an attached dccps_hc_tx_ccid as a     listener, the socket will be used after being released leading to denial of service (DoS) or a potential     code execution. The highest threat from this vulnerability is to data confidentiality and integrity as     well as system availability. (CVE-2020-16119)

    A flaw was found in the Linux kernel's KVM implementation, where improper handing of the VM_IO|VM_PFNMAP     VMAs in KVM bypasses RO checks and leads to pages being freed while still accessible by the VMM and guest.
    This flaw allows users who can start and control a VM to read/write random pages of memory, resulting in     local privilege escalation. The highest threat from this vulnerability is to confidentiality, integrity,     and system availability. (CVE-2021-22543)

    A flaw in the Linux kernel allows a privileged BPF program to obtain sensitive information from kernel     memory via a Speculative Store Bypass side-channel in the eBPF subsystem (CVE-2021-35477)

    A flaw was found in the CAN BCM networking protocol in the Linux kernel, where a local attacker can abuse     a flaw in the CAN subsystem to corrupt memory, crash the system or escalate privileges. (CVE-2021-3609)

    A vulnerability was found in the Linux kernel. Missing size validations on inbound SCTP packets may allow     the kernel to read uninitialized memory. (CVE-2021-3655)

    A lack of CPU resources in the Linux kernel tracing module functionality was found in the way users use     the trace ring buffer in specific way. Only privileged local users (with CAP_SYS_ADMIN capability) could     use this flaw to starve the resources causing denial of service. (CVE-2021-3679)

    A flaw was found in the Linux kernel's OverlayFS subsystem in the way the user mounts the TmpFS filesystem     with OverlayFS. This flaw allows a local user to gain access to hidden files that should not be     accessible. (CVE-2021-3732)

    A race problem was seen in the vt_k_ioctl in drivers/tty/vt/vt_ioctl.c in the Linux kernel, which may     cause an out of bounds read in vt as the write access to vc_mode is not protected by lock-in vt_ioctl     (KDSETMDE). The highest threat from this vulnerability is to data confidentiality. (CVE-2021-3753)

    A flaw was found on the Linux kernel. On the PowerPC platform, the KVM guest allows the OS users to cause     host OS memory corruption via rtas_args.nargs. The highest threat from this vulnerability is to data     confidentiality and integrity as well as system availability. (CVE-2021-37576)

    ** DISPUTED ** In drivers/char/virtio_console.c in the Linux kernel before 5.13.4, data corruption or loss     can be triggered by an untrusted device that supplies a buf->len value exceeding the buffer size. NOTE:
    the vendor indicates that the cited data corruption is not a vulnerability in any existing use case; the     length validation was added solely for robustness in the face of anomalous host OS behavior.
    (CVE-2021-38160)

    A flaw was found in the Linux kernel, where it incorrectly computes the access permissions of a shadow     page. This issue leads to a missing guest protection page fault. (CVE-2021-38198)

    A flaw was found in the Linux kernel. A denial of service attack (use-after-free and panic) can be caused     by a physically proximate attack by removing a MAX-3421 USB device in certain situations. The highest     threat from this vulnerability is to data confidentiality and integrity as well as system availability.
    (CVE-2021-38204)

    A flaw was found in the Linux kernel that allows attackers to defeat an ASLR protection mechanism because     it prints a kernel pointer (i.e., the real IOMEM pointer). The highest threat from this vulnerability is     to confidentiality. (CVE-2021-38205)

    A flaw was found in the Linux kernel. A race condition was discovered in the ext4 subsystem. The highest     threat from this vulnerability is to data confidentiality and integrity as well as system availability.
    (CVE-2021-40490)

    In ip_check_mc_rcu of igmp.c, there is a possible use after free due to improper locking. This could lead     to local escalation of privilege when opening and closing inet sockets with no additional execution     privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android     kernelAndroid ID: A-112551163References: Upstream kernel (CVE-2022-20141)

    An issue was discovered in the Linux kernel before 5.13.3. lib/seq_buf.c has a seq_buf_putmem_hex buffer     overflow. (CVE-2023-28772)

Tenable has extracted the preceding description block directly from the tested product 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

Amazon Linux AMI : kernel (ALAS-2021-1539)

high Nessus Plugin ID 153860

Version 1.8

Version 1.7

Version 1.6

Version 1.6

Version 1.5

Version 1.5

Version 1.4

Version 1.3

Version 1.8 Dec 12, 2024, 9:55 AM CVSS metrics ("Cvssv4 score" set to 8.7) CVSS metrics ("Cvssv4 threat vector" set to "CVSS:4.0/E:P") CVSS metrics ("Cvssv4 vector" set to "CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L") Detection (updated detection logic) Plugin metadata Plugin Feed: 202412120955
Version 1.7 Mar 19, 2024, 2:37 PM Exploit attributes ("Exploitability ease" changed from "No known exploits are available" to "Exploits are available") Plugin Feed: 202403191437
Version 1.6 Mar 19, 2024, 4:49 AM CVE (set "CVE" coverage to "CVE-2020-16119,CVE-2021-3609,CVE-2021-3655,CVE-2021-3679,CVE-2021-3732,CVE-2021-3753,CVE-2021-22543,CVE-2021-35477,CVE-2021-37576,CVE-2021-38160,CVE-2021-38198,CVE-2021-38204,CVE-2021-38205,CVE-2021-40490,CVE-2022-20141,CVE-2023-28772") Detection (updated detection logic) Exploit attributes ("Exploitability ease" changed from "Exploits are available" to "No known exploits are available") Plugin metadata Plugin Feed: 202403190449
Version 1.6 Mar 19, 2024, 12:36 PM Exploit attributes ("Exploitability ease" changed from "No known exploits are available" to "Exploits are available") Plugin Feed: 202403191236
Version 1.5 Nov 29, 2023, 3:21 PM 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") Exploit attributes ("Exploit available" set to "True". "Exploitability ease" changed from "No known exploits are available" to "Exploits are available") Plugin Feed: 202311291521
Version 1.5 Mar 19, 2024, 2:44 AM CVE (set "CVE" coverage to "CVE-2020-16119,CVE-2021-3609,CVE-2021-3655,CVE-2021-3679,CVE-2021-3732,CVE-2021-3753,CVE-2021-22543,CVE-2021-35477,CVE-2021-37576,CVE-2021-38160,CVE-2021-38198,CVE-2021-38204,CVE-2021-38205,CVE-2021-40490,CVE-2022-20141,CVE-2023-28772") Detection (updated detection logic) Exploit attributes ("Exploitability ease" changed from "Exploits are available" to "No known exploits are available") Plugin metadata Plugin Feed: 202403190244
Version 1.4 Mar 21, 2023, 7:30 PM Plugin metadata Plugin Feed: 202303211930
Version 1.3 Feb 7, 2023, 8:04 AM Regenerated based on advisory update Plugin Feed: 202302070804