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Amazon Linux AMI 2: CVE-2023-46218: Security patch for curl (ALAS-2024-2531)

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Amazon Linux AMI 2: CVE-2023-46218: Security patch for curl (ALAS-2024-2531)

Severity
6
CVSS
(AV:N/AC:L/Au:N/C:P/I:P/A:N)
Published
12/07/2023
Created
01/11/2024
Added
01/10/2024
Modified
01/30/2025

Description

This flaw allows a malicious HTTP server to set "super cookies" in curl that are then passed back to more origins than what is otherwise allowed or possible. This allows a site to set cookies that then would get sent to different and unrelated sites and domains. It could do this by exploiting a mixed case flaw in curl's function that verifies a given cookie domain against the Public Suffix List (PSL). For example a cookie could be set with `domain=co.UK` when the URL used a lower case hostname `curl.co.uk`, even though `co.uk` is listed as a PSL domain.

Solution(s)

  • amazon-linux-ami-2-upgrade-curl
  • amazon-linux-ami-2-upgrade-curl-debuginfo
  • amazon-linux-ami-2-upgrade-libcurl
  • amazon-linux-ami-2-upgrade-libcurl-devel

References

  • https://attackerkb.com/topics/cve-2023-46218
  • AL2/ALAS-2024-2531
  • CVE - 2023-46218
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