Microsoft Windows Print Spooler Remote Code Execution Vulnerability

Microsoft Windows Print Spooler contains an unspecified vulnerability due to the Windows Print Spooler service improperly performing privileged file operations. Successful exploitation allows an attacker to perform remote code execution with SYSTEM privileges. The vulnerability is also known unde...

Patch now! Microsoft fixes 71 Windows vulnerabilities in October Patch Tuesday

Yesterday we told you about Apple’s latest patches. Today we turn to Microsoft and its Patch Tuesday. Microsoft tends to provide a lot of information around its patches and, so, theres a lot to digest and piece together to give you an overview of the most important ones. In total, Microsoft has...

Patch Tuesday, October 2021 Edition

Microsoft today issued updates to plug more than 70 security holes in its Windows operating systems and other software, including one vulnerability that is already being exploited. This months Patch Tuesday also includes security fixes for the newly released Windows 11 operating system. Separatel...

Exploit for CVE-2021-1675

CVE-2021-1675-PrintNightmare Working PowerShell POC Powershel...

Exploit for CVE-2021-1675

C and Impacket implementation of PrintNightmare CVE-2021-1675/CVE-2021-34527...

Exploit for CVE-2021-1675

C PrintNightmare CVE-2021-1675 You'll need a DLL to use Sh...

Exploit for CVE-2021-1675

PrintNightmare Python implementation for PrintNightmare CVE-...

[updated] Patch now! PrintNightmare over, MSHTML fixed, a new horror appears … OMIGOD

The September 2021 Patch Tuesday could be remembered as the final patching attempt in the PrintNightmare… nightmare. The ease with which the vulnerabilities shrugged off the August patches doesn’t look to get a rerun. So far we haven’t seen any indications that this patch is so easy to circumvent...

Patch Tuesday - September 2021

Microsoft has fixed a total of 60 vulnerabilities this month, including two publicly disclosed 0-days. Fortunately there are only a few issues rated critical this month with the vast majority of the remainder being rated important. Here’s three big things you can go patch right now. MSHTML Remote...

Domain Escalation – PrintNightmare

Printers are part of every corporate infrastructure therefore Windows environments they have a number of embedded drivers installed. The Print Spooler spoolsv.exe service is responsible… Continue reading - Domain Escalation - PrintNightmare...

A week in security (August 9 – August 15)

Last week on Malwarebytes Labs: Home routers are being hijacked using a vulnerability disclosed just 2 before Ransomware turncoat leaks Conti data, lifts the lid on the ransomware business Check your passwords! Synology NAS devices are under attack from StealthWorker PrintNightmare and RDP RCE...

Ransomware Gangs Exploiting Windows Print Spooler Vulnerabilities

Ransomware operators such as Magniber and Vice Society are actively exploiting vulnerabilities in Windows Print Spooler to compromise victims and spread laterally across a victim's network to deploy file-encrypting payloads on targeted systems. "Multiple, distinct threat actors view this...

Vice Society Leverages PrintNightmare In Ransomware Attacks

By Edmund Brumaghin, Joe Marshall, and Arnaud Zobec. Executive Summary Another threat actor is actively exploiting the so-called PrintNightmare vulnerability CVE-2021-1675 / CVE-2021-34527 in Windows' print spooler service to spread laterally across a victim's network as part of a recent... This ...

Microsoft Warns: Another Unpatched PrintNightmare Zero-Day

One day after dropping its scheduled August Patch Tuesday update, Microsoft issued a warning about yet another unpatched privilege escalation/remote code-execution RCE vulnerability in the Windows Print Spooler that can be filed under the PrintNightmare umbrella. The news comes amid plenty of...

Microsoft’s PrintNightmare continues, shrugs off Patch Tuesday fixes

I doubt if there has ever been a more appropriate nickname for a vulnerable service than PrintNightmare. There must be a whole host of people in Redmond having nightmares about the Windows Print Spooler service by now. PrintNightmare is the name of a set of vulnerabilities that allow a standard...

Microsoft Warns of Another Unpatched Windows Print Spooler RCE Vulnerability

A day after releasing Patch Tuesday updates, Microsoft acknowledged yet another remote code execution vulnerability in the Windows Print Spooler component, adding that it's working to remediate the issue in an upcoming security update. Tracked as CVE-2021-36958 CVSS score: 7.3, the unpatched flaw...

Detecting PrintNightmare Exploit Attempts using Trend Micro Vision One and Cloud One

We look into the different implementations of PrintNightmare and include recommendations on how security teams can safeguard their workloads...

Last Week’s Security News: Black Hat Pwnie Awards, iPhone Checks Photos, Evil Windows Print Server, Cisco VPN Routers Takeovers

Hello everyone! Last Weeks Security News, August 1 - August 8. Black Hat Pwnie Awards Last week was more quiet than normal with Black Hat USA and DEF CON security conferences. I would like to start with the Pwnie Awards, which are held annually at Black Hat. Its like an Oscar or Tony in the...

PrintNightmare and RDP RCE among major issues tackled by Patch Tuesday

The sheer number of patches 44 security vulnerabilities should be enough to scare us, but unfortunately we have gotten used to those numbers. In fact, 44 is a low number compared to what we have seen on recent Patch Tuesdays. So what are the most notable vulnerabilities that were patched. One...

Microsoft Patch Tuesday, August 2021 Edition

Microsoft today released software updates to plug at least 44 security vulnerabilities in its Windows operating systems and related products. The software giant warned that attackers already are pouncing on one of the flaws, which ironically enough involves an easy-to-exploit bug in the software...