Rocky Linux 8 [CIQ] Security Update: grub2-common / grub2-debuginfo / grub2-debugsource / grub2-efi-aa64 / etc Multiple Vulnerabilities (crlsa-2022_5095)

high Nessus Plugin ID 357806

Synopsis

The Rocky Linux host is missing one or more security updates.

Description

The Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-2022_5095 advisory.

* grub2: Integer underflow in grub_net_recv_ip4_packets (CVE-2022-28733)

* grub2: Crafted PNG grayscale images may lead to out-of-bounds write in heap (CVE-2021-3695)

* grub2: Crafted PNG image may lead to out-of-bound write during huffman table handling (CVE-2021-3696)

* grub2: Crafted JPEG image can lead to buffer underflow write in the heap (CVE-2021-3697)

* grub2: Out-of-bound write when handling split HTTP headers (CVE-2022-28734)

* grub2: shim_lock verifier allows non-kernel files to be loaded (CVE-2022-28735)

* grub2: use-after-free in grub_cmd_chainloader() (CVE-2022-28736)

* shim: Buffer overflow when loading crafted EFI images (CVE-2022-28737)

Tenable has extracted the preceding description block directly from the CIQ security advisory.

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 based on the guidance in CIQ advisory crlsa-2022_5095.

Plugin Details

Severity: High

ID: 357806

File Name: ciq_rocky_linux_8_crlsa-2022_5095.nasl

Version: 1.1

Type: Local

Family: Rocky Linux Local Security Checks

Published: 10/1/2026

Updated: 10/1/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 57.58

Vendor

Vendor Severity: Unknown

CVSS v2

Risk Factor: Medium

Base Score: 6.9

Temporal Score: 5.1

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

CVSS Score Source: CVE-2021-3696

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

CVSS Score Source: CVE-2022-28733

Vulnerability Information

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/RockyLinux/release, Host/RockyLinux/rpm-list, Host/OS/extended-third-party

Exploit Ease: No known exploits are available

Patch Publication Date: 6/16/2022

Vulnerability Publication Date: 6/16/2022

Reference Information

CVE: CVE-2021-3695, CVE-2021-3696, CVE-2021-3697, CVE-2022-28733, CVE-2022-28734, CVE-2022-28735, CVE-2022-28736, CVE-2022-28737

Detections

Analytics