chrony up to 1.31.1/2.2.0 Key 7pk security

CVSS Meta Temp Score
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CTI Interest Score
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7.9$0-$5k0.00

Summaryinfo

A vulnerability was found in chrony up to 1.31.1/2.2.0 and classified as critical. This impacts an unknown function of the component Key Handler. Such manipulation leads to 7pk security. This vulnerability is uniquely identified as CVE-2016-1567. The attack can be launched remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in chrony up to 1.31.1/2.2.0 and classified as critical. Affected by this issue is an unknown code of the component Key Handler. The manipulation with an unknown input leads to a 7pk security vulnerability. Using CWE to declare the problem leads to CWE-254. Impacted is confidentiality, integrity, and availability. CVE summarizes:

chrony before 1.31.2 and 2.x before 2.2.1 do not verify peer associations of symmetric keys when authenticating packets, which might allow remote attackers to conduct impersonation attacks via an arbitrary trusted key, aka a "skeleton key."

The weakness was disclosed 01/26/2016 with Cisco (Website). The advisory is shared for download at lists.fedoraproject.org. This vulnerability is handled as CVE-2016-1567 since 01/07/2016. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1211.

The vulnerability scanner Nessus provides a plugin with the ID 88724 (Debian DLA-414-1 : chrony security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 124671 (Fedora Security Update for chrony (FEDORA-2016-6f783d1768)).

Upgrading to version 1.31.2 or 2.2.1 eliminates this vulnerability. A possible mitigation has been published 3 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (88724), SecurityFocus (BID 82900†) and Vulnerability Center (SBV-56615†). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.1
VulDB Meta Temp Score: 7.9

VulDB Base Score: 8.1
VulDB Temp Score: 7.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.1
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: 7pk security
CWE: CWE-254
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: 88724
Nessus Name: Debian DLA-414-1 : chrony security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for chrony FEDORA-2016-6
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: chrony 1.31.2/2.2.1

Timelineinfo

01/07/2016 🔍
01/25/2016 +18 days 🔍
01/26/2016 +0 days 🔍
01/26/2016 +0 days 🔍
01/26/2016 +0 days 🔍
01/27/2016 +0 days 🔍
02/11/2016 +15 days 🔍
02/14/2016 +3 days 🔍
02/15/2016 +1 days 🔍
10/14/2024 +3163 days 🔍

Sourcesinfo

Advisory: FEDORA-2016-6a0b0ab775
Organization: Cisco
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-1567 (🔍)
GCVE (CVE): GCVE-0-2016-1567
GCVE (VulDB): GCVE-100-80672
SecurityFocus: 82900 - Chrony CVE-2016-1567 Security Bypass Vulnerability
Vulnerability Center: 56615 - Chrony before 1.31.2 and 2.x before 2.2.1 Remote Restrictions Bypass via an Arbitrary Trusted Key, Medium

Entryinfo

Created: 01/27/2016 09:31
Updated: 10/14/2024 03:14
Changes: 01/27/2016 09:31 (59), 08/23/2018 07:18 (24), 07/06/2022 10:05 (4), 10/14/2024 03:14 (16)
Complete: 🔍
Cache ID: 216:0CB:103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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