Tuxfamily Chrony up to 1.28 sed Command cmdmon.c handle_client_accesses information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability was found in Tuxfamily Chrony up to 1.28 and classified as problematic. Affected by this issue is the function handle_client_accesses of the file cmdmon.c of the component sed Command. Executing a manipulation can lead to information disclosure. This vulnerability is registered as CVE-2012-4503. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Tuxfamily Chrony up to 1.28. This vulnerability affects the function handle_client_accesses of the file cmdmon.c of the component sed Command. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. CVE summarizes:

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.

The weakness was published 11/05/2013 as not defined mailinglist post (oss-sec). The advisory is shared for download at seclists.org. This vulnerability was named CVE-2012-4503. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1592.

The vulnerability scanner Nessus provides a plugin with the ID 69960 (Debian DSA-2760-1 : chrony - several vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks.

Upgrading to version 1.0 eliminates this vulnerability. Applying the patch c6fdeeb6bb0b17dc28c19ae492c4a1c498e54ea3 is able to eliminate this problem. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at X-Force (86341), Tenable (69960), SecurityFocus (BID 61703†) and Vulnerability Center (SBV-41135†). Similar entry is available at VDB-65439. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 69960
Nessus Name: Debian DSA-2760-1 : chrony - several vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 892760
OpenVAS Name: Debian Security Advisory DSA 2760-1 (chrony - several vulnerabilities
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Chrony 1.0
Patch: c6fdeeb6bb0b17dc28c19ae492c4a1c498e54ea3

Timelineinfo

08/21/2012 🔍
08/08/2013 +352 days 🔍
08/20/2013 +12 days 🔍
11/05/2013 +77 days 🔍
11/05/2013 +0 days 🔍
03/24/2015 +504 days 🔍
01/10/2022 +2484 days 🔍

Sourcesinfo

Advisory: DSA-2760
Status: Not defined
Confirmation: 🔍

CVE: CVE-2012-4503 (🔍)
GCVE (CVE): GCVE-0-2012-4503
GCVE (VulDB): GCVE-100-65440

OVAL: 🔍

X-Force: 86341
SecurityFocus: 61703
Vulnerability Center: 41135 - Chrony 1.27 -1.28 Remote DoS Vulnerability via Authentication Request (CVE-2012-4503), Medium

See also: 🔍

Entryinfo

Created: 03/24/2015 15:54
Updated: 01/10/2022 09:59
Changes: 03/24/2015 15:54 (67), 05/09/2017 09:05 (2), 01/10/2022 09:54 (6), 01/10/2022 09:55 (1), 01/10/2022 09:59 (2)
Complete: 🔍
Cache ID: 216::103

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