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Amazon Linux AMI: CVE-2021-21705: Security patch for php73 (ALAS-2021-1532)

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Amazon Linux AMI: CVE-2021-21705: Security patch for php73 (ALAS-2021-1532)

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:P/A:N)
Published
07/07/2021
Created
09/20/2021
Added
09/09/2021
Modified
10/14/2022

Description

In PHP versions 7.3.x below 7.3.29, 7.4.x below 7.4.21 and 8.0.x below 8.0.8, when using URL validation functionality via filter_var() function with FILTER_VALIDATE_URL parameter, an URL with invalid password field can be accepted as valid. This can lead to the code incorrectly parsing the URL and potentially leading to other security implications - like contacting a wrong server or making a wrong access decision.

Solution(s)

  • amazon-linux-upgrade-php73

References

  • ALAS-2021-1532
  • CVE-2021-21705
  • USN-5006-1
  • USN-5006-2

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