QID 354427

Date Published: 2022-12-21

QID 354427: Amazon Linux Security Advisory for expat : ALAS2022-2022-028

Expat (libexpat) is susceptible to a software flaw that causes process interruption.
When processing a large number of prefixed xml attributes on a single tag can libexpat can terminate unexpectedly due to integer overflow.
The highest threat from this vulnerability is to availability, confidentiality and integrity. (
( CVE-2022-23852) expat (aka libexpat) before 2.4.4 has an integer overflow in the doprolog function. (
( CVE-2022-23990)



Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

Successful exploitation of this vulnerability could lead to a securitybreach or could affect integrity, availability, and confidentiality.

  • CVSS V3 rated as Critical - 9.8 severity.
  • CVSS V2 rated as High - 7.5 severity.
    • Solution
    Please refer to Amazon advisory: ALAS2022-2022-028 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 354427

    CVE-2022-23852 | CVE-2022-23990 |
    Software Advisories
    Advisory ID Software Component Link
    ALAS2022-2022-028 amazon linux 2022 URL Logo alas.aws.amazon.com/AL2022/ALAS-2022-028.html
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