PC Security and Other Useful Information

No, I Did Not Hack Your MS Exchange Server

“New data suggests someone has compromised more than 21,000 Microsoft Exchange Server email systems worldwide and infected them with malware that invokes both KrebsOnSecurity and Yours Truly by name.”

Google Warns Mac, Windows Users of Chrome Zero-Day Flaw

“The use-after-free vulnerability is the third Google Chrome zero-day flaw to be disclosed in three months.

21 million free VPN users’ data exposed

“Detailed credentials for more than 21 million mobile VPN app users were swiped and advertised for sale online last week, offered by a cyber thief who allegedly stole user data collected by the VPN apps themselves. The data includes email addresses, randomly generated password strings, payment information, and device IDs belonging to users of three VPN apps—SuperVPN, GeckoVPN, and ChatVPN.”

Multiple Security Updates Released for Exchange Server – updated March 5, 2021
(Updated March 5, 2021)

“Today we are releasing several security updates for Microsoft Exchange Server to address vulnerabilities that have been used in limited targeted attacks. Due to the critical nature of these vulnerabilities, we recommend that customers apply the updates to affected systems immediately to protect against these exploits and to prevent future abuse across the ecosystem. “

Checkout Skimmers Powered by Chip Cards

“Easily the most sophisticated skimming devices made for hacking terminals at retail self-checkout lanes are a new breed of PIN pad overlay combined with a flexible, paper-thin device that fits inside the terminal’s chip reader slot. What enables these skimmers to be so slim? They draw their power from the low-voltage current that gets triggered when a chip-based card is inserted. As a result, they do not require external batteries, and can remain in operation indefinitely.”

Google Chrome Zero-Day Afflicts Windows, Mac Users

“Google is warning of a zero-day vulnerability in its V8 open-source web engine that’s being actively exploited by attackers.

A patch has been issued in version 88 of Google’s Chrome browser — specifically, version 88.0.4324.150 for Windows, Mac and Linux. This update will roll out over the coming days and weeks, said Google. The flaw (CVE-2021-21148) stems from a heap-buffer overflow, said Google.“

SonicWall Breach Stems from ‘Probable’ Zero-Days

Posted January 25, 2021:

“SonicWall is investigating “probable” zero-day flaws in its remote access security products that have been targeted by “highly-sophisticated” attackers. The company says it is investigating the attack and will update customers within 24 hours.”

DNSpooq bugs let attackers hijack DNS on millions of devices

“Israel-based security consultancy firm JSOF disclosed today seven Dnsmasq vulnerabilities, collectively known as DNSpooq, that can be exploited to launch DNS cache poisoning, remote code execution, and denial-of-service attacks against millions of affected devices.

Dnsmasq is a popular and open-source Domain Name System (DNS) forwarding software regularly used that adds DNS caching and Dynamic Host Configuration Protocol (DHCP) server capabilities to Internet-of-Things (IoT) and various other embedded devices.”

Zero-click iMessage zero-day used to hack the iPhones of 36 journalists

“Three dozen journalists had their iPhones hacked in July and August using what at the time was an iMessage zero-day exploit that didn’t require the victims to take any action to be infected, researchers said.”

SolarWinds hit by FireEye attack.

“We have just been made aware our systems experienced a highly sophisticated, manual supply chain attack on SolarWinds® Orion® Platform software builds for versions 2019.4 through 2020.2.1. We have been advised this attack was likely conducted by an outside nation state and intended to be a narrow, extremely targeted, and manually executed incident, as opposed to a broad, system-wide attack.”