Amazon Linux 2023 Security Advisory: ALAS2023-2026-2133
Advisory Released Date: 2026-09-14
Advisory Updated Date: 2026-09-14
Severity:
Important
Issue Overview:
A flaw was found in rsyslog. An unauthenticated remote attacker can trigger a heap buffer overflow in the RainerScript `replace()` function by sending specially crafted syslog messages. This vulnerability arises from an incorrect buffer size calculation during string replacement, causing memory corruption. Successful exploitation can lead to a denial of service (DoS) for the affected system. (CVE-2026-78002)
Affected Packages:
rsyslog
Issue Correction:
Run dnf update rsyslog --releasever 2023.12.20260914 or dnf update --advisory ALAS2023-2026-2133 --releasever 2023.12.20260914 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:
rsyslog-mmtaghostname-debuginfo-8.2204.0-3.amzn2023.0.6.aarch64
rsyslog-debugsource-8.2204.0-3.amzn2023.0.6.aarch64
rsyslog-logrotate-8.2204.0-3.amzn2023.0.6.aarch64
rsyslog-mmnormalize-debuginfo-8.2204.0-3.amzn2023.0.6.aarch64
rsyslog-elasticsearch-debuginfo-8.2204.0-3.amzn2023.0.6.aarch64
rsyslog-mmtaghostname-8.2204.0-3.amzn2023.0.6.aarch64
rsyslog-mmaudit-debuginfo-8.2204.0-3.amzn2023.0.6.aarch64
rsyslog-8.2204.0-3.amzn2023.0.6.aarch64
rsyslog-mmfields-debuginfo-8.2204.0-3.amzn2023.0.6.aarch64
rsyslog-openssl-8.2204.0-3.amzn2023.0.6.aarch64
rsyslog-debuginfo-8.2204.0-3.amzn2023.0.6.aarch64
rsyslog-mmnormalize-8.2204.0-3.amzn2023.0.6.aarch64
rsyslog-mmaudit-8.2204.0-3.amzn2023.0.6.aarch64
rsyslog-mmkubernetes-8.2204.0-3.amzn2023.0.6.aarch64
rsyslog-mmjsonparse-debuginfo-8.2204.0-3.amzn2023.0.6.aarch64
rsyslog-mmkubernetes-debuginfo-8.2204.0-3.amzn2023.0.6.aarch64
rsyslog-elasticsearch-8.2204.0-3.amzn2023.0.6.aarch64
rsyslog-crypto-8.2204.0-3.amzn2023.0.6.aarch64
rsyslog-mmjsonparse-8.2204.0-3.amzn2023.0.6.aarch64
rsyslog-openssl-debuginfo-8.2204.0-3.amzn2023.0.6.aarch64
rsyslog-crypto-debuginfo-8.2204.0-3.amzn2023.0.6.aarch64
rsyslog-mmfields-8.2204.0-3.amzn2023.0.6.aarch64
noarch:
rsyslog-doc-8.2204.0-3.amzn2023.0.6.noarch
src:
rsyslog-8.2204.0-3.amzn2023.0.6.src
x86_64:
rsyslog-mmjsonparse-debuginfo-8.2204.0-3.amzn2023.0.6.x86_64
rsyslog-elasticsearch-debuginfo-8.2204.0-3.amzn2023.0.6.x86_64
rsyslog-mmtaghostname-debuginfo-8.2204.0-3.amzn2023.0.6.x86_64
rsyslog-mmnormalize-8.2204.0-3.amzn2023.0.6.x86_64
rsyslog-debuginfo-8.2204.0-3.amzn2023.0.6.x86_64
rsyslog-mmjsonparse-8.2204.0-3.amzn2023.0.6.x86_64
rsyslog-mmkubernetes-debuginfo-8.2204.0-3.amzn2023.0.6.x86_64
rsyslog-8.2204.0-3.amzn2023.0.6.x86_64
rsyslog-debugsource-8.2204.0-3.amzn2023.0.6.x86_64
rsyslog-logrotate-8.2204.0-3.amzn2023.0.6.x86_64
rsyslog-crypto-debuginfo-8.2204.0-3.amzn2023.0.6.x86_64
rsyslog-mmaudit-debuginfo-8.2204.0-3.amzn2023.0.6.x86_64
rsyslog-mmaudit-8.2204.0-3.amzn2023.0.6.x86_64
rsyslog-crypto-8.2204.0-3.amzn2023.0.6.x86_64
rsyslog-openssl-8.2204.0-3.amzn2023.0.6.x86_64
rsyslog-mmfields-debuginfo-8.2204.0-3.amzn2023.0.6.x86_64
rsyslog-openssl-debuginfo-8.2204.0-3.amzn2023.0.6.x86_64
rsyslog-mmnormalize-debuginfo-8.2204.0-3.amzn2023.0.6.x86_64
rsyslog-elasticsearch-8.2204.0-3.amzn2023.0.6.x86_64
rsyslog-mmkubernetes-8.2204.0-3.amzn2023.0.6.x86_64
rsyslog-mmtaghostname-8.2204.0-3.amzn2023.0.6.x86_64
rsyslog-mmfields-8.2204.0-3.amzn2023.0.6.x86_64