QID 352325

Date Published: 2021-05-27

QID 352325: Amazon Linux Security Advisory for kernel-livepatch: ALAS2LIVEPATCH-2021-043

<DIV ID="issue_overview"> a flaw was found in the way access to sessions and handles was handled in the iscsi driver in the linux kernel.
A local user could use this flaw to leak iscsi transport handle kernel address or end arbitrary iscsi connections on the system. (
cve-2021-27363 ) a flaw was found in the linux kernel.
An out-of-bounds read was discovered in the libiscsi module that could lead to reading kernel memory or a crash.
The highest threat from this vulnerability is to data confidentiality as well as system availability. (
cve-2021-27364 ) a flaw was found in the linux kernel.
A heap buffer overflow in the iscsi subsystem is triggered by setting an iscsi string attribute to a value larger than one page and then trying to read it.
The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. (
cve-2021-27365 ) </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 High - 7.8 severity.
  • CVSS V2 rated as Medium - 4.6 severity.
    • Solution
    Please refer to Amazon advisory: ALASLIVEPATCH-2021-043 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 352325

    CVE-2021-27364 | CVE-2021-27363 | CVE-2021-27365 |
    Software Advisories
    Advisory ID Software Component Link
    ALASLIVEPATCH-2021-043 Amazon Linux 2 URL Logo alas.aws.amazon.com/AL2/ALASLIVEPATCH-2021-043.html
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