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High ALAS2023-2023-003 2 CVEs

Important: zlib security update (Amazon Linux 2023)

Published Feb 17, 2023 · Updated Feb 23, 2023

Summary

Package updates are available for Amazon Linux 2023 that fix the following vulnerabilities: CVE-2022-37434: A security vulnerability was found in zlib. The flaw triggered a heap-based buffer in inflate in the inflate.c function via a large gzip header extra field. This flaw is only applicable in the call inflateGetHeader. CVE-2018-25032: An out-of-bounds access flaw was found in zlib, which allows memory corruption when deflating (ex: when compressing) if the input has many distant matches. For some rare inputs with a large number of distant matches (crafted payloads), the buffer into which the compressed or deflated data is written can overwrite the distance symbol table which it overlays. This issue results in corrupted output due to invalid distances, which leads to out-of-bound access, corrupting the memory and potentially crashing the application.

Fixed packages 8

ReleasePackageFixed in
Amazon Linux · 2023 minizip-compat 0:1.2.11-33.amzn2023.0.4
Amazon Linux · 2023 minizip-compat-debuginfo 0:1.2.11-33.amzn2023.0.4
Amazon Linux · 2023 minizip-compat-devel 0:1.2.11-33.amzn2023.0.4
Amazon Linux · 2023 zlib 0:1.2.11-33.amzn2023.0.4
Amazon Linux · 2023 zlib-debuginfo 0:1.2.11-33.amzn2023.0.4
Amazon Linux · 2023 zlib-debugsource 0:1.2.11-33.amzn2023.0.4
Amazon Linux · 2023 zlib-devel 0:1.2.11-33.amzn2023.0.4
Amazon Linux · 2023 zlib-static 0:1.2.11-33.amzn2023.0.4

Vulnerabilities 2

References

  • web
    https://alas.aws.amazon.com/cve/html/CVE-2018-25032.html
  • web
    https://alas.aws.amazon.com/cve/html/CVE-2022-37434.html