CVE-2012-4503

Chrony vulnerability

CVSS

5.0

EPSS

3.1%

EPSS pct

86th

Exploited

No known

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 vendor

Tuxfamily

Affected product

Chrony

CVSS vector

AV:N/AC:L/Au:N/C:P/I:N/A:N

Weakness type (CWE)

CWE-200 — Exposure of Sensitive Information

Published

2013-11-05

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no authentication. Successful exploitation leads to partial impact to confidentiality.

Its EPSS score of 3.1% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 86% of all scored CVEs.

Check your external exposure to CVE-2012-4503

Confirm whether Tuxfamily Chrony is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2012-4503.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2012-4503

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2012-4503 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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