CVE-2012-4503: Tuxfamily Chrony

Medium severity, CVSS 5.0. EPSS: 3.1% chance of exploitation in the next 30 days.

cmdmon.c in Chrony before 1.29 allows remote attackers to obtain potentially sensitive information from stack memory via vectors related to (1) an invalid subnet in a RPY_SUBNETS_ACCESSED command to the handle_subnets_accessed function or (2) a RPY_CLIENT_ACCESSES command to the handle_client_accesses function when client logging is disabled, which causes uninitialized data to be included in a reply.

Affected products

• Tuxfamily Chrony: up to and including 1.28; version 1.0 only; version 1.1 only; version 1.18 only; version 1.19 only; version 1.19.99.1 only; …

Published 2013-11-05. Last modified 2026-06-16.