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Amazon Linux AMI: CVE-2021-21704: Security patch for php73 (ALAS-2021-1532)

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Amazon Linux AMI: CVE-2021-21704: Security patch for php73 (ALAS-2021-1532)

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:N/I:N/A:P)
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 Firebird PDO driver extension, a malicious database server could cause crashes in various database functions, such as getAttribute(), execute(), fetch() and others by returning invalid response data that is not parsed correctly by the driver. This can result in crashes, denial of service or potentially memory corruption.

Solution(s)

  • amazon-linux-upgrade-php73

References

  • ALAS-2021-1532
  • CVE-2021-21704
  • USN-5006-1
  • USN-5006-2

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