Headline
CVE-2022-34303: UEFI Secure Boot
A flaw was found in Eurosoft bootloaders before 2022-06-01. An attacker may use this bootloader to bypass or tamper with Secure Boot protections. In order to load and execute arbitrary code in the pre-boot stage, an attacker simply needs to replace the existing signed bootloader currently in use with this bootloader. Access to the EFI System Partition is required for booting using external media.
During runtime update, the TP (Authenticated Variable Verification Procedure) verifies the UDI (new Image Security Database), according to the CDI (UEFI Secure Boot Image Security Database) as policy. If verification passes, then the UDI is transformed into a CDI, and the new Image Security Database takes effect on the next boot. If verification fails, the new Image Security Data is discarded.
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An update for fwupd is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original. Related CVEs: * CVE-2022-3287: A flaw was found in fwupd. When creating an OPERATOR user account on the BMC, the redfish plugin saved the auto-generated password to /etc/fwupd/redfish.conf without proper restriction, allowing any user on the system to read the same configuration file. * CVE-2022-34301: A flaw was found in CryptoPro Secure Disk bootloaders before 2022-06-01. An at...
Dell Unisphere for PowerMax vApp, VASA Provider vApp, and Solution Enabler vApp version 9.2.3.x contain an information disclosure vulnerability. A low privileged remote attacker could potentially exploit this vulnerability, leading to read arbitrary files on the underlying file system.
Hello everyone! In this episode, let’s take a look at the Microsoft Patch Tuesday August 2022 vulnerabilities. I use my Vulristics vulnerability prioritization tool as usual. I take comments for vulnerabilities from Tenable, Qualys, Rapid7, ZDI and Kaspersky blog posts. Also, as usual, I take into account the vulnerabilities added between the July and August […]