QID 352259

Date Published: 2021-04-05

QID 352259: Amazon Linux Security Advisory for screen: ALAS2-2021-1623

<DIV> Issue Overview:

A flaw was found in screen. A specially crafted sequence of combining characters could cause an out of bounds write leading to arbitrary code execution. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. (CVE-2021-26937 )

</DIV>

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-2021-1623 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 352259

    CVE-2021-26937 |
    Software Advisories
    Advisory ID Software Component Link
    ALAS-2021-1623 Amazon Linux 2 screen (4.1.0-0.27.20120314git3c2946.amzn2) on aarch64 URL Logo alas.aws.amazon.com/AL2/ALAS-2021-1623.html
    ALAS-2021-1623 Amazon Linux 2 screen (4.1.0-0.27.20120314git3c2946.amzn2) on i686 URL Logo alas.aws.amazon.com/AL2/ALAS-2021-1623.html
    ALAS-2021-1623 Amazon Linux 2 screen (4.1.0-0.27.20120314git3c2946.amzn2) on src URL Logo alas.aws.amazon.com/AL2/ALAS-2021-1623.html
    ALAS-2021-1623 Amazon Linux 2 screen (4.1.0-0.27.20120314git3c2946.amzn2) on x86_64 URL Logo alas.aws.amazon.com/AL2/ALAS-2021-1623.html
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