CVE-2016-1567

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."

CVSS v3.0 8.1 HIGH
CVSS v2.0 6.8 MEDIUM

8.1^/10

CVSS v3.0 : HIGH

Vector : AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitability : 2.2 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.8^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:P/I:P/A:P

Exploitability : 8.6 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
http://lists.fedoraproject.org/pipermail/package-announce/2016-January/175969.html	Patch
http://chrony.tuxfamily.org/news.html#_20_jan_2016_chrony_2_2_1_and_chrony_1_31_2_released	Vendor Advisory
http://www.talosintel.com/reports/TALOS-2016-0071/	Exploit
http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176559.html

Advertisement

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:tuxfamily:chrony:2.1.1:::::::*
	cpe:2.3:a:tuxfamily:chrony:2.1:::::::*
	cpe:2.3:a:tuxfamily:chrony:2.2:::::::*
	cpe:2.3:a:tuxfamily:chrony:2.0:::::::*
	cpe:2.3:a:tuxfamily:chrony::::::::

Information

Published : 2016-01-26 11:59

Updated : 2016-12-05 19:07

NVD link : CVE-2016-1567

Mitre link : CVE-2016-1567

JSON object : View

CWE

CWE-254

7PK - Security Features

Advertisement

Products Affected

tuxfamily

chrony

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "http://lists.fedoraproject.org/pipermail/package-announce/2016-January/175969.html", "name": "FEDORA-2016-6a0b0ab775", "tags": ["Patch"], "refsource": "FEDORA"}, {"url": "http://chrony.tuxfamily.org/news.html#_20_jan_2016_chrony_2_2_1_and_chrony_1_31_2_released", "name": "http://chrony.tuxfamily.org/news.html#_20_jan_2016_chrony_2_2_1_and_chrony_1_31_2_released", "tags": ["Vendor Advisory"], "refsource": "CONFIRM"}, {"url": "http://www.talosintel.com/reports/TALOS-2016-0071/", "name": "http://www.talosintel.com/reports/TALOS-2016-0071/", "tags": ["Exploit"], "refsource": "MISC"}, {"url": "http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176559.html", "name": "FEDORA-2016-6f783d1768", "tags": [], "refsource": "FEDORA"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "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.\""}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-254"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2016-1567", "ASSIGNER": "cve@mitre.org"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 6.8, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "MEDIUM", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "severity": "MEDIUM", "impactScore": 6.4, "obtainAllPrivilege": false, "exploitabilityScore": 8.6, "obtainUserPrivilege": false, "obtainOtherPrivilege": false}, "baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.0", "baseScore": 8.1, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.2}}, "publishedDate": "2016-01-26T19:59Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:tuxfamily:chrony:2.1.1:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:tuxfamily:chrony:2.1:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:tuxfamily:chrony:2.2:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:tuxfamily:chrony:2.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:a:tuxfamily:chrony:*:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true, "versionEndIncluding": "1.31.1"}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2016-12-06T03:07Z"}