QID 352474

Date Published: 2021-07-14

QID 352474: Amazon Linux Security Advisory for libX11: ALAS-2021-1517

<DIV ID="issue_overview"> a missing validation flaw was found in libx11.
This flaw allows an attacker to inject x11 protocol commands on x clients, and in some cases, also bypass, authenticate (via injection of control characters), or potentially execute arbitrary code with permissions of the application compiled with libx11.
The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. (
cve-2021-31535 ) </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 - 9.8 severity.
  • CVSS V2 rated as High - 7.5 severity.
    • Solution
    Please refer to Amazon advisory: ALAS-2021-1517 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 352474

    CVE-2021-31535 |
    Software Advisories
    Advisory ID Software Component Link
    ALAS-2021-1517 Amazon Linux URL Logo alas.aws.amazon.com/ALAS-2021-1517.html
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