Vulnerability Details : CVE-2014-3347
Cisco 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.
Vulnerability category: Denial of service
Products affected by CVE-2014-3347
- cpe:2.3:o:cisco:ios:15.1\(4\)m2:*:*:*:*:*:*:*
- cpe:2.3:h:cisco:1801_integrated_service_router:-:*:*:*:*:*:*:*
- cpe:2.3:h:cisco:1802_integrated_service_router:-:*:*:*:*:*:*:*
- cpe:2.3:h:cisco:1803_integrated_service_router:-:*:*:*:*:*:*:*
- cpe:2.3:h:cisco:1811_integrated_service_router:-:*:*:*:*:*:*:*
- cpe:2.3:h:cisco:1812_integrated_service_router:-:*:*:*:*:*:*:*
- cpe:2.3:h:cisco:1841_integrated_service_router:-:*:*:*:*:*:*:*
- cpe:2.3:h:cisco:1861_integrated_service_router:-:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2014-3347
1.36%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 84 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2014-3347
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.4
|
MEDIUM | AV:N/AC:H/Au:N/C:N/I:N/A:C |
4.9
|
6.9
|
NIST |
CWE ids for CVE-2014-3347
-
Assigned by: nvd@nist.gov (Primary)
References for CVE-2014-3347
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http://www.securityfocus.com/bid/69439
Cisco 1800 Series CVE-2014-3347 Denial of Service Vulnerability
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https://exchange.xforce.ibmcloud.com/vulnerabilities/95558
Cisco 1800 Series Integrated Services Routers collection module denial of service CVE-2014-3347 Vulnerability Report
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http://tools.cisco.com/security/center/viewAlert.x?alertId=35453
Cisco 1800 Series ISR ISDN Basic Rate Interface Denial of Service VulnerabilityVendor Advisory
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http://tools.cisco.com/security/center/content/CiscoSecurityNotice/CVE-2014-3347
Cisco 1800 Series ISR ISDN Basic Rate Interface Denial of Service VulnerabilityVendor Advisory
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http://www.securitytracker.com/id/1030772
Cisco 1800 Series Integrated Services Router ISDN Timing Error Lets Remote Users Deny Services - SecurityTracker
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