CVE-2014-3347

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Summary

CVECVE-2014-3347
StatePUBLISHED
Assignercisco
Source PriorityCVE Program / NVD first with legacy fallback
Published2014-08-28 23:55:05 UTC
Updated2026-05-06 22:30:45 UTC
DescriptionCisco IOS 15.1(4)M2 on Cisco 1800 ISR devices, when the ISDN Basic Rate Interface is enabled, allows remote attackers to cause a denial of service (device hang) by leveraging knowledge of the ISDN phone number to trigger an interrupt timer collision during entropy collection, leading to an invalid state of the hardware encryption module, aka Bug ID CSCul77897.

Risk And Classification

Primary CVSS: v2.0 5.4 from [email protected]

AV:N/AC:H/Au:N/C:N/I:N/A:C

Problem Types: CWE-399 | n/a

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
High
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete

AV:N/AC:H/Au:N/C:N/I:N/A:C

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Hardware Cisco 1801 Integrated Service Router - All All All
Hardware Cisco 1802 Integrated Service Router - All All All
Hardware Cisco 1803 Integrated Service Router - All All All
Hardware Cisco 1811 Integrated Service Router - All All All
Hardware Cisco 1812 Integrated Service Router - All All All
Hardware Cisco 1841 Integrated Service Router - All All All
Hardware Cisco 1861 Integrated Service Router - All All All
Operating System Cisco Ios 15.1\(4\)m2 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-3347 af854a3a-2127-422b-91ae-364da2661108 tools.cisco.com Vendor Advisory
Cisco 1800 Series CVE-2014-3347 Denial of Service Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com
IBM X-Force Exchange af854a3a-2127-422b-91ae-364da2661108 exchange.xforce.ibmcloud.com
tools.cisco.com/security/center/viewAlert.x af854a3a-2127-422b-91ae-364da2661108 tools.cisco.com Vendor Advisory
Cisco 1800 Series Integrated Services Router ISDN Timing Error Lets Remote Users Deny Services - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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