CVE-2012-4503

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2013-11-05 · updated 2026-06-16
Weakness: CWE-200

Description

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

chrony: through 1.28; 1.0, 1.1, 1.18, 1.19, 1.19.99.1, 1.19.99.2 (+17)

References

http://git.tuxfamily.org/chrony/chrony.git/?p=chrony/chrony.git%3Ba=commitdiff%3Bh=c6fdeeb6bb0b17dc28c19ae492c4a1c498e54ea3
http://permalink.gmane.org/gmane.comp.time.chrony.announce/15
http://seclists.org/oss-sec/2013/q3/332
http://www.debian.org/security/2013/dsa-2760
https://bugzilla.redhat.com/show_bug.cgi?id=846392
http://git.tuxfamily.org/chrony/chrony.git/?p=chrony/chrony.git%3Ba=commitdiff%3Bh=c6fdeeb6bb0b17dc28c19ae492c4a1c498e54ea3
http://permalink.gmane.org/gmane.comp.time.chrony.announce/15
http://seclists.org/oss-sec/2013/q3/332
http://www.debian.org/security/2013/dsa-2760
https://bugzilla.redhat.com/show_bug.cgi?id=846392

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