ALAS2023-2026-2115

References: CVE-2025-49506  CVE-2026-32327  CVE-2026-34501  CVE-2026-34502 
FAQs regarding Amazon Linux ALAS/CVE Severity

Issue Overview:

APR-util versions 1.6.3 (and earlier) function apr_password_validate() was not constant-time with regards to hashes or passwords comparisons, potentially leaking their content via a side channel timing attack particularly on platforms without crypt() such as Windows, BeOS, NetWare, or Android.

Users are recommended to upgrade to version 1.6.4, which fixes this issue. (CVE-2025-49506)

A bug in APR-util version 1.6.3 (and earlier) allows a stack recursion attack against any library consumer which parses XML from untrusted sources and uses the apr_xml_quote_elem() function.

Users are recommended to upgrade to version 1.6.4, which fixes this issue. (CVE-2026-32327)

Heap-based Buffer Overflow vulnerability in Apache Portable Runtime Utility redis client.

This issue affects Apache Portable Runtime Utility: from 1.6.0 through 1.6.3.

Users are recommended to upgrade to version 1.6.4, which fixes the issue. (CVE-2026-34501)

Heap-based Buffer Overflow vulnerability in Apache Portable Runtime Utility memcached client

This issue affects Apache Portable Runtime Utility: from 1.3.0 through 1.6.3. (CVE-2026-34502)

Issue Correction:
Run dnf update apr-util --releasever 2023.12.20260831 or dnf update --advisory ALAS2023-2026-2115 --releasever 2023.12.20260831 to update your system.
More information on how to update your system can be found on this page: Amazon Linux 2023 documentation

New Packages:

aarch64:
    apr-util-debugsource-1.6.5-1.amzn2023.0.1.aarch64
    apr-util-sqlite-1.6.5-1.amzn2023.0.1.aarch64
    apr-util-lmdb-debuginfo-1.6.5-1.amzn2023.0.1.aarch64
    apr-util-ldap-1.6.5-1.amzn2023.0.1.aarch64
    apr-util-openssl-1.6.5-1.amzn2023.0.1.aarch64
    apr-util-pgsql-debuginfo-1.6.5-1.amzn2023.0.1.aarch64
    apr-util-ldap-debuginfo-1.6.5-1.amzn2023.0.1.aarch64
    apr-util-odbc-1.6.5-1.amzn2023.0.1.aarch64
    apr-util-odbc-debuginfo-1.6.5-1.amzn2023.0.1.aarch64
    apr-util-devel-1.6.5-1.amzn2023.0.1.aarch64
    apr-util-pgsql-1.6.5-1.amzn2023.0.1.aarch64
    apr-util-debuginfo-1.6.5-1.amzn2023.0.1.aarch64
    apr-util-openssl-debuginfo-1.6.5-1.amzn2023.0.1.aarch64
    apr-util-1.6.5-1.amzn2023.0.1.aarch64
    apr-util-sqlite-debuginfo-1.6.5-1.amzn2023.0.1.aarch64
    apr-util-mysql-debuginfo-1.6.5-1.amzn2023.0.1.aarch64
    apr-util-lmdb-1.6.5-1.amzn2023.0.1.aarch64
    apr-util-mysql-1.6.5-1.amzn2023.0.1.aarch64

src:
    apr-util-1.6.5-1.amzn2023.0.1.src

x86_64:
    apr-util-debugsource-1.6.5-1.amzn2023.0.1.x86_64
    apr-util-devel-1.6.5-1.amzn2023.0.1.x86_64
    apr-util-ldap-debuginfo-1.6.5-1.amzn2023.0.1.x86_64
    apr-util-odbc-debuginfo-1.6.5-1.amzn2023.0.1.x86_64
    apr-util-odbc-1.6.5-1.amzn2023.0.1.x86_64
    apr-util-pgsql-1.6.5-1.amzn2023.0.1.x86_64
    apr-util-mysql-debuginfo-1.6.5-1.amzn2023.0.1.x86_64
    apr-util-lmdb-debuginfo-1.6.5-1.amzn2023.0.1.x86_64
    apr-util-mysql-1.6.5-1.amzn2023.0.1.x86_64
    apr-util-sqlite-debuginfo-1.6.5-1.amzn2023.0.1.x86_64
    apr-util-openssl-1.6.5-1.amzn2023.0.1.x86_64
    apr-util-1.6.5-1.amzn2023.0.1.x86_64
    apr-util-pgsql-debuginfo-1.6.5-1.amzn2023.0.1.x86_64
    apr-util-openssl-debuginfo-1.6.5-1.amzn2023.0.1.x86_64
    apr-util-debuginfo-1.6.5-1.amzn2023.0.1.x86_64
    apr-util-lmdb-1.6.5-1.amzn2023.0.1.x86_64
    apr-util-ldap-1.6.5-1.amzn2023.0.1.x86_64
    apr-util-sqlite-1.6.5-1.amzn2023.0.1.x86_64