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OFFTOPIC for Cyber Security Space


marcofabbri
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Welcome to the cybersecurity offtopic area. πŸ€΅

Think this place as a warmful bar: have a sit, relax yourself and grab a pint of anything you wanna drink. We're ready to chatting about anything related to IT and cybersec, even if it's a little far from Veeam world.

Feel free to post questions, CVEs alerts, how-to, workaround and even more.

πŸΊπŸ’š

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marcofabbri
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  • Author
  • On the path to Greatness
  • 990 comments
  • July 27, 2023

Millions of Ubuntu users vulnerable to OverlayFS module security bug

Linux kernel flaws (CVE-2023-32629, CVE-2023-2640) affect 40% of users.

More: https://nvd.nist.gov/vuln/detail/CVE-2023-2640

          https://nvd.nist.gov/vuln/detail/CVE-2023-32629 

CVE-2023-2640 (CVSS v3: 7.8) grants elevated privileges due to insufficient permission checks.

CVE-2023-32629 (CVSSv3: 5.4) allows execution of arbitrary code by exploiting memory management race condition. Bugs linked to OverlayFS module modifications in Ubuntu kernel. PoC exploits already public. Other Linux distributions not impacted.

Ubuntu already released patch updates for all vulnerabilities. Upgrade via package manager and reboot after installation.


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