The version of kernel installed on the remote host is prior to 5.15.137-91.144. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2KERNEL-5.15-2023-030 advisory.

    2024-06-06: CVE-2023-52476 was added to this advisory.

    An issue was discovered in the Linux kernel before 6.5.9, exploitable by local users with userspace access     to MMIO registers. Incorrect access checking in the #VC handler and instruction emulation of the SEV-ES     emulation of MMIO accesses could lead to arbitrary write access to kernel memory (and thus privilege     escalation). This depends on a race condition through which userspace can replace an instruction before     the #VC handler reads it. (CVE-2023-46813)

    In the Linux kernel, the following vulnerability has been resolved:

    perf/x86/lbr: Filter vsyscall addresses (CVE-2023-52476)

    A heap out-of-bounds write vulnerability in the Linux kernel's Linux Kernel Performance Events (perf)     component can be exploited to achieve local privilege escalation.

    If perf_read_group() is called while an event's sibling_list is smaller than its child's sibling_list, it     can increment or write to memory locations outside of the allocated buffer.

    We recommend upgrading past commit 32671e3799ca2e4590773fd0e63aaa4229e50c06. (CVE-2023-5717)

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 2 : kernel (ALASKERNEL-5.15-2023-030)

high Nessus Plugin ID 185920

Version 1.2

Version 1.1

Version 1.0

Version 1.2 Dec 12, 2024, 9:55 AM CVSS metrics ("Cvssv4 score" set to 0.0) CVSSv2 severity (based on None, severity decreased from "High" to "Low") Detection (updated detection logic) Plugin Feed: 202412120955
Version 1.1 Jun 8, 2024, 3:36 AM CVE (set "CVE" coverage to "CVE-2023-5717,CVE-2023-46813,CVE-2023-52476") Detection (updated detection logic) Plugin metadata Plugin Feed: 202406080336
Version 1.0 Nov 17, 2023, 6:11 AM New Plugin Feed: 202311170611