Security Advisories & Alerts

UPDATED – Critical Patches Issued for Microsoft Products, June 8, 2021

DESCRIPTION:Multiple vulnerabilities have been discovered in Microsoft products, themost severe of which could allow for arbitrary code execution in thecontext of the logged-on user. Depending on the privileges associatedwith the user, an attacker could then install programs; view, change, ordelete data; or create new accounts with full user rights. Users whoseaccounts are configured to have fewer user rights on the system could beless impacted than...

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Millions of Dell Devices at Risk for Remote BIOS Attacks – CVE-2021-21571, CVE-2021-21572, CVE-2021-21573, CVE-2021-21574

Description:Eclypsium researchers have identified multiple vulnerabilities affecting the BIOSConnect feature within Dell Client BIOS.This chain of vulnerabilities has a cumulative CVSS score of 8.3 (High) because it allows a privileged network adversary to impersonate Dell.com andgain arbitrary code execution at the BIOS/UEFI level of the affected device. Such an attack would enable adversaries to control the device’s boot process andsubvert the operating system and higher-layer...

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PrintNightmare(CVE-2021-34527): Microsoft Releases Out-of-Band Security Updates

Microsoft has released the KB5004945 emergency security update to fix the actively exploited PrintNightmare zero-day vulnerability in the Windows Print Spooler service impacting all Windows versions. However, the patch is incomplete and the vulnerability can still be locally exploited to gain SYSTEM privileges. The remote code execution bug (tracked as CVE-2021-34527) allows attackers to take over affected servers via remote code execution (RCE) with SYSTEM...

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CVE-2021-3560 – Polkit – Local Privilege Escalation

Description:It was found that polkit could be tricked into bypassing the credential checks for D-Bus requests, elevating the privileges of the requestor to the root user.This flaw could be used by an unprivileged local attacker to, for example, create a new local administrator. The highest threat from this vulnerability is to dataconfidentiality and integrity as well as system availability. Impact:The vulnerability enables an unprivileged local...

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