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Grief Ransomware Gang Claims 41 New Victims, Targeting Manufacturers; Municipalities; & Service Companies in U.K. & Europe
Grief Operators Earned an Estimated 8.5 Million British Pounds in Four Months Key Findings: The Grief Ransomware Gang (a rebrand of the DoppelPaymer Ransomware Group) claims to have infected 41 new victims between May 27, 2021—Oct. 1, 2021 with their ransomware.Over half the companies listed on Grief’s underground leak site are based in the U.K. and Europe. The Grief Ransomware Gang appears to…
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Waterloo, ON – Oct. 12, 2021 -- eSentire, recognized globally as the Authority in Managed Detection and Response (MDR), today announced the expansion of its award-winning MDR services with Microsoft Azure Sentinel, as part of its integration with the complete Microsoft 365 Defender and Azure Defender product suites supporting Microsoft SIEM, endpoint, identity, email and cloud security services.…
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Security advisories — Apr 23, 2020

iOS Zero-Day Vulnerabilities

THE THREAT

On April 20nd, 2020, ZecOps announced the discovery of two zero-day vulnerabilities affecting iOS devices including iPhone and iPad [1]. Both vulnerabilities have existed since September 2012 and have been exploited in the wild since at least January of 2018. If exploited, the pair of vulnerabilities allow remote threat actors to leak, modify, or delete emails in the Apple Mail App. Apple has released a beta version for iOS that fixes the issues, but this is currently only available for members of the Apple Developer Program.

Until a security update is widely released, organizations are recommended to disable the use of Apple mail on corporate devices.

What we’re doing about it

What you should do about it

Additional information

The discovered vulnerabilities are classified as an out-of-bounds write vulnerability and a heap-overflow vulnerability allowing for remote code execution (RCE) in the context of the Apple Mail app.

It should be noted that all iOS versions from iOS6 - iOS 13.4.1 are confirmed vulnerable. Versions prior to 6 may be vulnerable but have not been tested at this time.

In an attack scenario, a threat actor would send specially crafted email to a victim’s mailbox. The email appears to be blank to the victim. If the user is running iOS 13, no user interaction is required for compromise. If the user is running iOS 12 or earlier, the user would have to open the email for compromise to occur. From the user perspective, their device may run slower than expected, but no other notable disruptions occur.

References:

[1] https://blog.zecops.com/vulnerabilities/unassisted-ios-attacks-via-mobilemail-maild-in-the-wild/

[2] https://support.apple.com/en-us/HT208094