Security News > 2023 > April
Hackers are compromising websites to inject scripts that display fake Google Chrome automatic update errors that distribute malware to unaware visitors. BleepingComputer has found numerous sites hacked in this malware distribution campaign, including adult sites, blogs, news sites, and online stores.
Microsoft has patched a zero-day vulnerability in the Windows Common Log File System, actively exploited by cybercriminals to escalate privileges and deploy Nokoyawa ransomware payloads. In light of its ongoing exploitation, CISA also added the CVE-2023-28252 Windows zero-day to its catalog of Known Exploited Vulnerabilities today, ordering Federal Civilian Executive Branch agencies to secure their systems against it by May 2nd. Tracked as CVE-2023-28252, this CLFS security flaw was discovered by Genwei Jiang of Mandiant and Quan Jin of DBAPPSecurity's WeBin Lab.
It's April 2023 Patch Tuesday, and Microsoft has released fixes for 97 CVE-numbered vulnerabilities, including one actively exploited zero-day. "CVE-2023-28252 is the second CLFS elevation of privilege zero-day exploited in the wild this year and the fourth in the last two years. It is also the second CLFS zero-day disclosed to Microsoft by researchers from Mandiant and DBAPPSecurity, though it is unclear if both of these discoveries are related to the same attacker."
Rogue firmware could, in theory, be used to spy on almost everything you do on your computer, acting as a super-low-level rootkit, the jargon term for malware that exists primarily to protect and hide other malware. These days, rogue firmware downloads are generally easier to spot than they were in the past, given that they are usually digitally signed by the official vendor.
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Microsoft and Citizen Lab discovered commercial spyware made by an Israel-based company QuaDream used to compromise the iPhones of high-risk individuals using a zero-click exploit named ENDOFDAYS. The attackers targeted a zero-day vulnerability affecting iPhones running iOS 1.4 up to 14.4.2 between January 2021 and November 2021, using what Citizen Lab described as backdated and "Invisible iCloud calendar invitations." Compromised devices belonged to "At least five civil society victims of QuaDream's spyware and exploits in North America, Central Asia, Southeast Asia, Europe, and the Middle East," Citizen Lab researchers said.
Microsoft has released the Windows 10 KB5025221 and KB5025229 cumulative updates for versions 22H2, version 21H2, version 21H1, and 1809 to fix problems in the operating system. These updates have been released as part of the mandatory April 2023 Patch Tuesday, which includes security updates for 97 vulnerabilities.
Today is Microsoft's April 2023 Patch Tuesday, and security updates fix one actively exploited zero-day vulnerability and a total of 97 flaws. This count does not include seventeen Microsoft Edge vulnerabilities fixed on April 6th. One zero-day fixed.
The Kodi Foundation has disclosed a data breach after hackers stole the organization's MyBB forum database containing user data and private messages and attempted to sell it online. The now-shut down Kodi forum has roughly 401,000 members who used it to discuss media streaming, exchange tips, offer support, share new add-ons, and more in 3 million posts.
VoIP communications company 3CX confirmed today that a North Korean hacking group was behind last month's supply chain attack. "Based on the Mandiant investigation into the 3CX intrusion and supply chain attack thus far, they attribute the activity to a cluster named UNC4736. Mandiant assesses with high confidence that UNC4736 has a North Korean nexus," 3CX CISO Pierre Jourdan said today.