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Windows installer zero day.Windows Installer vulnerability becomes actively exploited zero-day
A moment of luck for threat actors and yet another major headache windows installer zero day cyber defenders! On /9439.txt 22,security researcher Abdelhamid Naceri released a fully-functional proof-of-concept Aero windows installer zero day for the new Windows Installer zero-day vulnerability. The vulnerability in question is a Windows Installer elevation of privilege EoP bug initially patched by Microsoft in November Yet, the installrr was not fixed properly, which allowed Abdelhamid Naceri, the researcher who revealed the issue, to find a way to overcome the protections.
What is worse, during his investigation, Naceri discovered a much more severe EoP glitch that affects all currently supported Windows windows installer zero day. If exploited, the PoC allows hackers to zeroo admin privileges when logged into a Windows machine with Edge installed.
As a result, an adversary can run any malicious code as an administrator. According to the Bleeping Computer commentaryNaceri windows installer zero day to release the proof-of-concept exploit for CVE to protest against significantly decreased bug bounty rewards by Microsoft. And threat actors are taking advantage of this. Moreover, researchers provide evidence of the exploit being actively windows installer zero day in the wild. The PoC can be successfully exploited on any Windows device, including fully-patched Windows 10, Windows 11, and Windows Server machines.
Experts recommend avoiding any mitigation attempts due to the risk of breaking Windows Installer. Eager to make the world a safer place? Join our Threat Bounty program, share your Sigma and Yara rules via the Threat Detection Marketplace repository, and get recurrent rewards for your individual /14952.txt Refer to our guide for berginners to learn what are Sigma rules and how to create them. Go to Platform Join Threat Bounty.
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Windows installer zero day.Attackers Actively Target Windows Installer Zero-Day
Latest posts by Eugene Tkachenko see all. Was this article helpful? Like and share it with your peers. To help you get started and drive immediate value, book a meeting now with SOC Prime experts. Join for Free Book a Meeting. News — 4 min read. Alla Yurchenko. Blog , Latest Threats — 3 min read. Daryna Olyniychuk. Blog , Latest Threats — 4 min read.
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Sergiu Gatlan Sergiu Gatlan is a reporter who covered cybersecurity, technology, Apple, Google, and a few other topics at Softpedia for more than a decade. Email or Twitter DMs for tips. Previous Article Next Article. You may also like:.
Popular Stories. Newsletter Sign Up To receive periodic updates and news from BleepingComputer , please use the form below. Login Username. Remember Me. Exploiting this vulnerability allows hackers with limited user access to elevate their privileges, acting as an administrator of the system.
The security firm has already found malware samples out on the Internet, so there's a good chance someone already fell victim to it. The vulnerability had been previously reported to Microsoft by Abdelhamid Naceri, a security researcher at Microsoft, and was supposedly patched with the fix CVE on November 9. However, the patch didn't seem to be enough to fix the issue, as the problem persists, leading Naceri to publish the proof-of-concept on GitHub.
In simple terms, the proof-of-concept shows how a hacker can replace any executable file on the system with an MSI file using the discretionary access control list DACL for Microsoft Edge Elevation Service. Microsoft rated the vulnerability as "medium severity," with a base CVSS Common Vulnerability scoring system score of 5.
Now that a functional proof-of-concept exploit code is available, others could try to further abuse it, possibly increasing these scores. At the moment, Microsoft has yet to issue a new update to mitigate the vulnerability.
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