Amazon Linux 2023 Security Advisory: ALAS2023-2026-1781
Advisory Released Date: 2026-06-08
Advisory Updated Date: 2026-06-08
Severity:
Medium
Issue Overview:
In memcached before 1.6.42, username data for SASL password database authentication has a timing side channel because a loop exits as soon as a valid username is found by sasl_server_userdb_checkpass. (CVE-2026-47783)
In memcached before 1.6.42, password data for SASL password database authentication has a timing side channel because memcmp is used by sasl_server_userdb_checkpass. (CVE-2026-47784)
Affected Packages:
memcached
Issue Correction:
Run dnf update memcached --releasever 2023.12.20260608 or dnf update --advisory ALAS2023-2026-1781 --releasever 2023.12.20260608 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:
memcached-debugsource-1.6.42-2.amzn2023.0.1.aarch64
memcached-devel-1.6.42-2.amzn2023.0.1.aarch64
memcached-debuginfo-1.6.42-2.amzn2023.0.1.aarch64
memcached-selinux-1.6.42-2.amzn2023.0.1.aarch64
memcached-1.6.42-2.amzn2023.0.1.aarch64
src:
memcached-1.6.42-2.amzn2023.0.1.src
x86_64:
memcached-devel-1.6.42-2.amzn2023.0.1.x86_64
memcached-debuginfo-1.6.42-2.amzn2023.0.1.x86_64
memcached-selinux-1.6.42-2.amzn2023.0.1.x86_64
memcached-1.6.42-2.amzn2023.0.1.x86_64
memcached-debugsource-1.6.42-2.amzn2023.0.1.x86_64