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CentOS 7 : grub2 (RHSA-2022:8900)

high Nessus Plugin ID 208483

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Synopsis

The remote CentOS Linux host is missing a security update.

Description

The remote CentOS Linux 7 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2022:8900 advisory.

 - Integer underflow in grub_net_recv_ip4_packets; A malicious crafted IP packet can lead to an integer underflow in grub_net_recv_ip4_packets() function on rsm->total_len value. Under certain circumstances the total_len value may end up wrapping around to a small integer number which will be used in memory allocation. If the attack succeeds in such way, subsequent operations can write past the end of the buffer. (CVE-2022-28733)

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

Solution

Update the affected packages.

See Also

https://access.redhat.com/errata/RHSA-2022:8900

Plugin Details

Severity: High

ID: 208483

File Name: centos_RHSA-2022-8900.nasl

Version: 1.1

Type: local

Agent: unix

Published: 10/9/2024

Updated: 10/9/2024

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: High

Base Score: 7.6

Temporal Score: 5.6

Vector: CVSS2#AV:N/AC:H/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2022-28733

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.1

Vector: CVSS:3.0/AV:N/AC:H/PR:N/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:centos:centos:grub2-common, p-cpe:/a:centos:centos:grub2-ppc64-modules, p-cpe:/a:centos:centos:grub2-efi-x64, p-cpe:/a:centos:centos:grub2-ppc64le-modules, p-cpe:/a:centos:centos:grub2-tools, p-cpe:/a:centos:centos:grub2-ppc64le, p-cpe:/a:centos:centos:grub2-efi-ia32-modules, p-cpe:/a:centos:centos:grub2-ppc64, p-cpe:/a:centos:centos:grub2, p-cpe:/a:centos:centos:grub2-efi-ia32-cdboot, p-cpe:/a:centos:centos:grub2-efi-x64-cdboot, p-cpe:/a:centos:centos:grub2-efi-aa64-modules, p-cpe:/a:centos:centos:grub2-tools-extra, p-cpe:/a:centos:centos:grub2-tools-minimal, p-cpe:/a:centos:centos:grub2-pc, p-cpe:/a:centos:centos:grub2-efi-x64-modules, cpe:/o:centos:centos:7, p-cpe:/a:centos:centos:grub2-pc-modules, p-cpe:/a:centos:centos:grub2-ppc-modules, p-cpe:/a:centos:centos:grub2-efi-ia32

Required KB Items: Host/local_checks_enabled, Host/CentOS/release, Host/CentOS/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 12/8/2022

Vulnerability Publication Date: 7/21/2022

Reference Information

CVE: CVE-2022-28733

RHSA: 2022:8900