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Amazon Linux AMI 2: CVE-2023-29469: Security patch for libxml2 (ALAS-2023-2021)

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Amazon Linux AMI 2: CVE-2023-29469: Security patch for libxml2 (ALAS-2023-2021)

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
04/24/2023
Created
05/05/2023
Added
05/03/2023
Modified
05/08/2023

Description

An issue was discovered in libxml2 before 2.10.4. When hashing empty dict strings in a crafted XML document, xmlDictComputeFastKey in dict.c can produce non-deterministic values, leading to various logic and memory errors, such as a double free. This behavior occurs because there is an attempt to use the first byte of an empty string, and any value is possible (not solely the '\0' value).

Solution(s)

  • amazon-linux-ami-2-upgrade-libxml2
  • amazon-linux-ami-2-upgrade-libxml2-debuginfo
  • amazon-linux-ami-2-upgrade-libxml2-devel
  • amazon-linux-ami-2-upgrade-libxml2-python
  • amazon-linux-ami-2-upgrade-libxml2-static

References

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