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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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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 — Jun 19, 2019

CVE-2019-10149 Exploited in the Wild

Linux Exim mail servers version 4.87 – 4.91 (inclusive) is at risk of exploitation via CVE-2019-10149 [1]. This vulnerability is currently being exploited by threat actors in the wild [2]. Successful exploitation of CVE-2019-10149 allows remote, unauthenticated threat actors to perform remote code execution on vulnerable systems. Attacks in the wild include a wormable exploit, which after successful exploitation may spread to additional vulnerable EXIMservers.

There is a high confidence rating that vulnerable Linux EXIM mail servers will be affected by this exploit. Organizations need to apply the official security patch as soon as possible to avoid potential compromise.

eSentire has not observed attacks against client companies at this time.

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What you should do about it

Additional information

CVE-2019-10149 was weaponized by threat actors rapidly; the vulnerability was announced publicly on June 3rd and exploited by June 9th. The fast adoption rate isdue to both the wide availability of vulnerable servers and the potential,high value of remote command execution. Based on Shodan scans, there are approximately 3,134,631 vulnerable servers exposed to the web at the time of writing.

Current externally observed campaigns leveraging this vulnerability have been identified as crypto-mining campaigns, but remote code execution could be used to necessitate further compromise of any impacted system.

References:

[1] https://nvd.nist.gov/vuln/detail/CVE-2019-10149

[2] https://www.cyber.gc.ca/en/alerts/active-exploitation-exim-vulnerability-observed-wild