CVE-2012-4503

Published: Nov 5, 2013Updated: Apr 29, 2026 Sources: CVE List NVDCWE-200

5.0MEDIUM

NVD MITRE

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAccess Vector

Network

AC:LAccess Complexity

Low

Au:NAuthentication

None

Impact

C:PConfidentiality

Partial

I:NIntegrity

None

A:NAvailability

None

Open in CVSS calculator →

Weaknesses

CWE-200

Affected Products

tuxfamily

oss-projectaka chrony

chronyOn-prem

Networking Infrastructure / dns-dhcp-ntp

and 1 more affected products View all →

Exploitability

Official Patch Available

Is your org exposed to CVE-2012-4503?We can run the check for you — a free external exposure review, no install. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

1 technique

Collection

View detailed technique mapping

References

http://permalink.gmane.org/gmane.comp.time.chrony.announce/15

permalink.gmane.org

http://www.debian.org/security/2013/dsa-2760

debian.org

http://seclists.org/oss-sec/2013/q3/332

seclists.org

and 2 more references View all →

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2012-4503 and every CVE in our database. Create a free account — no credit card required.

Create Free Account

Plain-language analysis

Impact assessment and exploitation scenario in plain English

Attack graph visualization

Interactive attack path and kill chain mapping

Exploit details & PoC links

ExploitDB, Metasploit, GitHub PoCs with direct links

Nuclei scanner templates

Ready-to-use vulnerability scanner templates

Full remediation guide

Patch instructions, workarounds, and compliance impact

Interactive AI chat

Ask questions about this vulnerability in natural language

Related vulnerabilities

Semantically similar CVEs and attack patterns

REST API & MCP access

Integrate vulnerability data into your workflows