Oracle Linux 8 : kernel (ELSA-2024-12187)

high Nessus Plugin ID 191464

Synopsis

The remote Oracle Linux host is missing one or more security updates.

Description

The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2024-12187 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)

- A vulnerability was found in compare_netdev_and_ip in drivers/infiniband/core/cma.c in RDMA in the Linux Kernel. The improper cleanup results in out-of-boundary read, where a local user can utilize this problem to crash the system or escalation of privilege. (CVE-2023-2176)

- A use-after-free vulnerability in the Linux kernel's net/sched: sch_hfsc (HFSC qdisc traffic control) component can be exploited to achieve local privilege escalation. If a class with a link-sharing curve (i.e. with the HFSC_FSC flag set) has a parent without a link-sharing curve, then init_vf() will call vttree_insert() on the parent, but vttree_remove() will be skipped in update_vf(). This leaves a dangling pointer that can cause a use-after-free. We recommend upgrading past commit b3d26c5702c7d6c45456326e56d2ccf3f103e60f. (CVE-2023-4623)

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 packages.

See Also

https://linux.oracle.com/errata/ELSA-2024-12187.html

Plugin Details

Severity: High

ID: 191464

File Name: oraclelinux_ELSA-2024-12187.nasl

Version: 1.0

Type: local

Agent: unix

Published: 3/1/2024

Updated: 3/1/2024

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C

CVSS Score Source: CVE-2023-4623

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

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:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:oracle:linux:kernel-debug, p-cpe:/a:oracle:linux:kernel-tools-libs, p-cpe:/a:oracle:linux:python3-perf, cpe:/o:oracle:linux:8::baseos_latest, p-cpe:/a:oracle:linux:kernel-debug-modules-extra, p-cpe:/a:oracle:linux:kernel-tools-libs-devel, p-cpe:/a:oracle:linux:kernel, p-cpe:/a:oracle:linux:kernel-devel, p-cpe:/a:oracle:linux:kernel-modules-extra, p-cpe:/a:oracle:linux:kernel-core, p-cpe:/a:oracle:linux:kernel-cross-headers, p-cpe:/a:oracle:linux:kernel-debug-devel, p-cpe:/a:oracle:linux:kernel-headers, p-cpe:/a:oracle:linux:kernel-abi-stablelists, p-cpe:/a:oracle:linux:kernel-debug-core, cpe:/o:oracle:linux:8, p-cpe:/a:oracle:linux:kernel-modules, p-cpe:/a:oracle:linux:kernel-tools, p-cpe:/a:oracle:linux:bpftool, p-cpe:/a:oracle:linux:perf, cpe:/a:oracle:linux:8::codeready_builder, cpe:/o:oracle:linux:8:9:baseos_patch, p-cpe:/a:oracle:linux:kernel-debug-modules

Required KB Items: Host/OracleLinux, Host/RedHat/release, Host/RedHat/rpm-list, Host/local_checks_enabled

Exploit Ease: No known exploits are available

Patch Publication Date: 2/29/2024

Vulnerability Publication Date: 4/20/2023

Reference Information

CVE: CVE-2023-2176, CVE-2023-4623, CVE-2023-46813