CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.1	$0-$5k	0.00

Summaryinfo

A vulnerability was found in chrony up to 1.31.0. It has been declared as critical. This vulnerability affects unknown code. Such manipulation leads to denial of service. This vulnerability is referenced as CVE-2015-1822. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in chrony up to 1.31.0. Affected by this issue is some unknown processing. The manipulation with an unknown input leads to a code vulnerability. Using CWE to declare the problem leads to CWE-17. Impacted is availability. CVE summarizes:

chrony before 1.31.1 does not initialize the last "next" pointer when saving unacknowledged replies to command requests, which allows remote authenticated users to cause a denial of service (uninitialized pointer dereference and daemon crash) or possibly execute arbitrary code via a large number of command requests.

The weakness was published 04/16/2015 with Red Hat (Website). The advisory is available at listengine.tuxfamily.org. This vulnerability is handled as CVE-2015-1822 since 02/17/2015. The attack may be launched remotely. Required for exploitation is a simple authentication. The technical details are unknown and an exploit is not available.

The vulnerability scanner Nessus provides a plugin with the ID 83978 (Amazon Linux AMI : chrony (ALAS-2015-539)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Amazon Linux Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 350163 (Amazon Linux Security Advisory for chrony: ALAS-2015-539).

Upgrading to version 1.31.1 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (83978), SecurityFocus (BID 73956†) and Vulnerability Center (SBV-49962†). Similar entries are available at VDB-68347, VDB-72083, VDB-74129 and VDB-74989. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

• chrony

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10
• 1.11
• 1.12
• 1.13
• 1.14
• 1.15
• 1.16
• 1.17
• 1.18
• 1.19
• 1.20
• 1.21
• 1.22
• 1.23
• 1.24
• 1.25
• 1.26
• 1.27
• 1.28
• 1.29
• 1.30
• 1.31.0

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Code
CWE: CWE-17
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 83978
Nessus Name: Amazon Linux AMI : chrony (ALAS-2015-539)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 103435
OpenVAS Name: RedHat Update for chrony RHSA-2015:2241-03
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: chrony 1.31.1

Timelineinfo

02/17/2015 🔍
04/07/2015 +49 days 🔍
04/12/2015 +5 days 🔍
04/16/2015 +4 days 🔍
04/16/2015 +0 days 🔍
04/17/2015 +1 days 🔍
05/04/2015 +17 days 🔍
05/09/2022 +2562 days 🔍

Sourcesinfo

Advisory: listengine.tuxfamily.org
Organization: Red Hat
Status: Not defined
Confirmation: 🔍

CVE: CVE-2015-1822 (🔍)
GCVE (CVE): GCVE-0-2015-1822
GCVE (VulDB): GCVE-100-74990

OVAL: 🔍

SecurityFocus: 73956 - Chrony CVE-2015-1822 Memory Corruption Vulnerability
Vulnerability Center: 49962 - Chrony before 1.31.1 Remote DoS or Code Execution via a Large Number of Command Requests, Medium

See also: 🔍

Entryinfo

Created: 04/17/2015 10:25
Updated: 05/09/2022 08:42
Changes: 04/17/2015 10:25 (61), 06/28/2017 06:18 (10), 05/09/2022 08:42 (3)
Complete: 🔍
Cache ID: 216:EA0:103

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