Vulnerability Name:

CVE-2012-4620 (CCN-78883)

Assigned:2012-09-26
Published:2012-09-26
Updated:2017-08-29
Summary:Cisco IOS 12.2 and 15.0 through 15.2 on Cisco 10000 series routers, when a tunnel interface exists, allows remote attackers to cause a denial of service (interface queue wedge) via tunneled (1) GRE/IP, (2) IPIP, or (3) IPv6 in IPv4 packets, aka Bug ID CSCts66808.
CVSS v3 Severity:7.5 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
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:7.8 High (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C)
5.8 Medium (Temporal CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
7.8 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C)
5.8 Medium (CCN Temporal CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C/E:U/RL:OF/RC:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
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-2012-4620

Source: CCN
Type: SA50771
Cisco IOS Cisco 10000 Series Routers Tunneled Packets Handling Denial of Service Vulnerability

Source: CCN
Type: cisco-sa-20120926-c10k-tunnels
Cisco IOS Software Tunneled Traffic Queue Wedge Vulnerability

Source: CISCO
Type: Vendor Advisory
20120926 Cisco IOS Software Tunneled Traffic Queue Wedge Vulnerability

Source: CCN
Type: OSVDB ID: 85811
Cisco IOS Malformed Tunneled Packet Handling Remote DoS

Source: BID
Type: UNKNOWN
55696

Source: CCN
Type: BID-55696
Cisco IOS Queue Wedge CVE-2012-4620 Denial of Service Vulnerability

Source: SECTRACK
Type: UNKNOWN
1027578

Source: XF
Type: UNKNOWN
ciscoios-tunneled-dos(78883)

Source: XF
Type: UNKNOWN
ciscoios-tunneled-dos(78883)

Vulnerable Configuration:Configuration 1:
  • cpe:/h:cisco:10008_router:*:*:*:*:*:*:*:*

  • Configuration 2:
  • cpe:/o:cisco:ios:12.2:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios:15.0:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios:15.0(1)se:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios:15.1:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios:15.2:*:*:*:*:*:*:*

  • Configuration CCN 1:
  • cpe:/o:cisco:ios:12.4:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios:15.0:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios:15.1:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios:15.2:*:*:*:*:*:*:*

  • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:cisco.oval:def:221
    V
    cisco-sa-20120926-c10k-tunnels-CVE-2012-4620
    2012-09-18
    BACK
    cisco 10008 router *
    cisco ios 12.2
    cisco ios 15.0
    cisco ios 15.0(1)se
    cisco ios 15.1
    cisco ios 15.2
    cisco ios 12.4
    cisco ios 15.0
    cisco ios 15.1
    cisco ios 15.2