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Oct 18, 2021
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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eSentire is The Authority in Managed Detection and Response Services, protecting the critical data and applications of 1000+ organizations in 70+ countries from known and unknown cyber threats. Founded in 2001, the company’s mission is to hunt, investigate and stop cyber threats before they become business disrupting events.
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Oct 12, 2021
eSentire Launches MDR with Microsoft Azure Sentinel Extending Response Capabilities Across Entire Microsoft Security Ecosystem
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 — Oct 14, 2020

Patch Tuesday Priority Vulnerabilities

THE THREAT

On October 13th, 2020, Microsoft released its Patch Tuesday vulnerability list, addressing 87 security issues. Two critical vulnerabilities from this release are especially concerning. CVE-2020-16898, also known as Bad Neighbor, is a remote code execution vulnerability affecting multiple versions of Windows 10 and Windows Server 2019 [1]. This vulnerability received the highest criticality rating of all Microsoft vulnerabilities for the month of October (9.8/10), and Microsoft has stated that exploitation is considered likely.

CVE-2020-16952 is a remote code execution vulnerability affecting multiple versions of Microsoft SharePoint Server [2]. Proof of Concept (PoC) exploit code for this vulnerability emerged on the evening of October 13th. eSentire expects exploitation by threat actors in the immediate future due to the availability of a PoC exploit code.

Organizations are strongly encouraged to apply the applicable Microsoft patches as soon as possible.

What we’re doing about it

What you should do about it

Additional information

CVE-2020-16898 is due to a failure that takes place when TCP/IP stack handles ICMPv6 Router Advertisement packets. Exploitation of the vulnerability would allow a threat actor to execute remote code on vulnerable servers. This vulnerability is especially concerning as it is wormable, meaning that threat actors could craft an exploit that automatically spreads between vulnerable Windows devices.

CVE-2020-16952 is due to a failure by SharePoint to check the source markup of an application package. Successful exploitation would allow a remote threat actor to execute code in the context of the SharePoint application pool/server farm account. Authentication is required in order to exploit this vulnerability [3]. CVE-2020-16952 was rated Exploitation Less Likely by Microsoft, but this is likely to change due to the public release of PoC exploit code.

Exploitation in the wild has not been identified for either of the vulnerabilities mentioned in this advisory.

CVE-2020-16898 Affected Products:

CVE-2020-16952 Affected Products:

References:

[1] https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16898

[2] https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16952

[3] https://srcincite.io/advisories/src-2020-0022/