QID 352379

Date Published: 2021-06-24

QID 352379: Amazon Linux Security Advisory for samba: ALAS2-2021-1649

<DIV ID="issue_overview"> a flaw was found in the way samba handled file and directory permissions.
This flaw allows an authenticated user to gain access to certain file and directory information, which otherwise would be unavailable.
The highest threat from this vulnerability is to confidentiality. (
cve-2020-14318 ) a null pointer dereference flaw was found in samba's winbind service.
This flaw allows a local user to crash the winbind service, causing a denial of service.
The highest threat from this vulnerability is to system availability. (
cve-2020-14323 ) a flaw was found in the microsoft windows netlogon remote protocol (ms-nrpc), where it reuses a known, static, zero-value initialization vector (iv) in aes-cfb8 mode.
This flaw allows an unauthenticated attacker to impersonate a domain-joined computer, including a domain controller, and possibly obtain domain administrator privileges.
The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. (
cve-2020-1472 ) </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 Critical - 10 severity.
  • CVSS V2 rated as Critical - 9.3 severity.
    • Solution
    Please refer to Amazon advisory: ALAS2-2021-1649 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 352379

    CVE-2020-14323 | CVE-2020-14318 | CVE-2020-1472 |
    Software Advisories
    Advisory ID Software Component Link
    ALAS2-2021-1649 Amazon Linux 2 URL Logo alas.aws.amazon.com/AL2/ALAS-2021-1649.html
    By selecting these links, you may be leaving CVEreport webspace. We have provided these links to other websites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other websites that are more appropriate for your purpose. CVEreport does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, CVEreport does not endorse any commercial products that may be mentioned on these sites. Please address comments about any linked pages to [email protected].