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CISA ADDS THREE SECURITY FLAWS WITH ACTIVE EXPLOITATION TO KEV CATALOG - #ROMCOM

In July 2023, a Russian cybercriminal group exploited a zero-day vulnerability
in Microsoft Office and Windows to target North American and European
governments. The group, known as Storm-0978, deployed ransomware and stole data
in an ongoing campaign. Storm-0978 has been active since at least 2019, using
phishing emails and malicious documents to distribute their signature backdoor,
RomCom, onto systems. Microsoft has issued guidance for mitigating the
vulnerability but has not yet released a patch. Federal agencies have been given
directives to apply workarounds, and private organizations have been urged to do
the same to avoid compromise.
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RomCom

Safeguard Microsoft stack from CVE-2023 RCE vulnerabilities
Summary


Safeguard Microsoft stack from CVE-2023 RCE vulnerabilities
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Expert Advice


SHORT-TERMKnown recommendations to mitigate this threat, based on your data in
Fletch.

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 * Update all GPU firmware to the latest version, as some vendors have already
   released patches for the LeftoverLocals vulnerability. [1]
 * Avoid using multi-tenant GPU environments for security-critical processes
   until a fix is implemented. [2]
 * Implement user-level mitigations to protect sensitive data. [3]

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LONG-TERMKnown recommendations to mitigate more threats like this.

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 * Regularly update all hardware and software to ensure the latest security
   patches are applied. [1]
 * Implement a policy of using only hardware and software from vendors that
   provide regular security updates and have a good track record of responding
   quickly to vulnerabilities. [2]
 * Consider implementing an automatic local memory clearing mechanism between
   kernel calls to ensure isolation of sensitive data written by one process.
   [3]
 * Regularly conduct security audits and vulnerability assessments to identify
   and address potential security risks. [4]
 * Train staff on the importance of cybersecurity and how to recognize and
   respond to potential threats. [5]

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