QID 352320

Date Published: 2021-05-27

QID 352320: Amazon Linux Security Advisory for kernel-livepatch: ALAS2LIVEPATCH-2021-048

<DIV ID="issue_overview"> a low severity issue was found in the nitro enclaves linux kernel driver that could lead to local privilege escalation.
The issue does not break the isolation or security of what is running inside the enclave as the nitro enclave's security model already excludes the instance running the nitro enclaves kernel driver from its trust boundary. for the issue to occur, the nitro enclaves kernel module needs to be loaded and in use, and nitro enclave (ne) group permissions are required.
Only trusted nitro enclaves software runs with the ne group permissions, and no interactive logins are in the group by default.
As a result, the only actors in a position to take advantage of this issue would already have to have root privileges.
While this issue has no impact to nitro enclave's security or isolation properties, we recommend that customers update to the latest kernel provided by amazon linux. </DIV>

Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

Allows unauthorized disclosure of information; allows unauthorized modification; allows disruption of service.

  • CVSS V3 rated as Medium - 4.2 severity.
  • CVSS V2 rated as Medium - 5.4 severity.
  • Solution
    Please refer to Amazon advisory: ALASLIVEPATCH-2021-048 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 352320

    Software Advisories
    Advisory ID Software Component Link
    ALASLIVEPATCH-2021-048 Amazon Linux 2 URL Logo alas.aws.amazon.com/AL2/ALASLIVEPATCH-2021-048.html

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