New Vulnerabilities May Allow Hackers to Bypass Spectre Mitigations on Linux
Cybersecurity researchers have recently unveiled two critical vulnerabilities in Linux-based systems. If exploited, these flaws could enable attackers to bypass mitigations for speculative execution attacks like Spectre and access sensitive kernel memory. Identified by Piotr Krysiuk from Symantec’s Threat Hunter team, the vulnerabilities are designated as CVE-2020-27170 and CVE-2020-27171, both with a CVSS score of 5.5. They affect all Linux kernels released before version 5.11.8. Security patches were made available on March 20, with various distributions, including Ubuntu, Debian, and Red Hat, implementing fixes. CVE-2020-27170 can disclose content from any kernel memory location, while CVE-2020-27171 enables data retrieval from a 4GB segment of kernel memory. First reported in January 2018, the Spectre and Meltdown vulnerabilities exploit weaknesses in modern CPUs to leak sensitive data.
New Vulnerabilities Raise Concerns Over Spectre Mitigations on Linux Systems On March 29, 2021, cybersecurity researchers revealed two significant vulnerabilities affecting Linux-based operating systems that could enable hackers to bypass existing protections against speculative execution attacks, including the notorious Spectre exploit. Discovered by Piotr Krysiuk from Symantec’s Threat Hunter team,…
New Vulnerabilities May Allow Hackers to Bypass Spectre Mitigations on Linux
Cybersecurity researchers have recently unveiled two critical vulnerabilities in Linux-based systems. If exploited, these flaws could enable attackers to bypass mitigations for speculative execution attacks like Spectre and access sensitive kernel memory. Identified by Piotr Krysiuk from Symantec’s Threat Hunter team, the vulnerabilities are designated as CVE-2020-27170 and CVE-2020-27171, both with a CVSS score of 5.5. They affect all Linux kernels released before version 5.11.8. Security patches were made available on March 20, with various distributions, including Ubuntu, Debian, and Red Hat, implementing fixes. CVE-2020-27170 can disclose content from any kernel memory location, while CVE-2020-27171 enables data retrieval from a 4GB segment of kernel memory. First reported in January 2018, the Spectre and Meltdown vulnerabilities exploit weaknesses in modern CPUs to leak sensitive data.