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OpenAdvisories
High ALAS2023-2023-204 2 CVEs

Important: byacc security update (Amazon Linux 2023)

Published Jun 5, 2023 · Updated Jun 7, 2023

Ecosystem: Amazon Linux

Summary

Package updates are available for Amazon Linux 2023 that fix the following vulnerabilities: CVE-2021-33642: When a file is processed, an infinite loop occurs in next_inline() of the more_curly() function. CVE-2021-33641: When processing files, malloc stores the data of the current line. When processing comments, malloc incorrectly accesses the released memory (use after free).

Fixed packages 3

ReleasePackageFixed in
Amazon Linux · 2023 byacc 0:2.0.20210109-2.amzn2023.0.3
Amazon Linux · 2023 byacc-debuginfo 0:2.0.20210109-2.amzn2023.0.3
Amazon Linux · 2023 byacc-debugsource 0:2.0.20210109-2.amzn2023.0.3

Vulnerabilities 2

  • High 7.8
    CVE-2021-33641

    When processing files, malloc stores the data of the current line. When processing comments, malloc incorrectly accesse…

  • Medium 5.5
    CVE-2021-33642

    When a file is processed, an infinite loop occurs in next_inline() of the more_curly() function.

References

  • web
    https://alas.aws.amazon.com/cve/html/CVE-2021-33641.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2021-33642.html