Vulnerability Name:

CVE-2014-3347 (CCN-95558)

Assigned:2014-08-27
Published:2014-08-27
Updated:2017-08-29
Summary: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.
CVSS v3 Severity:5.9 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:5.4 Medium (CVSS v2 Vector: AV:N/AC:H/Au:N/C:N/I:N/A:C)
4.0 Medium (Temporal CVSS v2 Vector: AV:N/AC:H/Au:N/C:N/I:N/A:C/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): High
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
5.4 Medium (CCN CVSS v2 Vector: AV:N/AC:H/Au:N/C:N/I:N/A:C)
4.0 Medium (CCN Temporal CVSS v2 Vector: AV:N/AC:H/Au:N/C:N/I:N/A:C/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): High
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-399
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2014-3347

Source: CCN
Type: Cisco Security Notice
Cisco 1800 Series ISDN Basic Rate Interface Denial of Service

Source: CISCO
Type: Vendor Advisory
20140827 Cisco 1800 Series ISR ISDN Basic Rate Interface Denial of Service Vulnerability

Source: CONFIRM
Type: Vendor Advisory
http://tools.cisco.com/security/center/viewAlert.x?alertId=35453

Source: BID
Type: UNKNOWN
69439

Source: CCN
Type: BID-69439
Cisco 1800 Series CVE-2014-3347 Denial of Service Vulnerability

Source: SECTRACK
Type: UNKNOWN
1030772

Source: XF
Type: UNKNOWN
cisco-isr-cve20143347-dos(95558)

Source: XF
Type: UNKNOWN
cisco-isr-cve20143347-dos(95558)

Vulnerable Configuration:Configuration 1:
  • cpe:/o:cisco:ios:15.1(4)m2:*:*:*:*:*:*:*
  • AND
  • cpe:/h:cisco:1801_integrated_service_router:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:1802_integrated_service_router:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:1803_integrated_service_router:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:1811_integrated_service_router:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:1812_integrated_service_router:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:1841_integrated_service_router:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:1861_integrated_service_router:-:*:*:*:*:*:*:*

  • * Denotes that component is vulnerable
    BACK
    cisco ios 15.1(4)m2
    cisco 1801 integrated service router -
    cisco 1802 integrated service router -
    cisco 1803 integrated service router -
    cisco 1811 integrated service router -
    cisco 1812 integrated service router -
    cisco 1841 integrated service router -
    cisco 1861 integrated service router -